I had to post another part to this story. I'm sure you're all dying to know how Severus gets back at Sirius. Enjoy!

"Bloody hell, Daddy!" Harry yelled as Severus fought a shirt over the little boy's head.

Harry had woken up during the night coughing and crying. Severus had been working on a special potion when he heard Harry on the baby monitor. He brought Harry a headache reliever and a pepperup potion, then spent an hour trying to rock Harry back to sleep. Now, Harry was miserable and tired and fighting with Severus at the changing table.

"You will definitely be taking a long nap later," Severus informed, ignoring the language.

"No nap!" Harry screamed. "Shit!"

He kicked his legs as his father laid him on his back and slid pants on. Severus sighed as Harry started crying. He would have liked if Harry had slept in, but the boy had been wide awake and calling for him – practically screaming in his crib.

Harry must have forgotten that 'bloody hell' and 'shit' were 'bad words,' as his wonderful uncle had taught him yesterday. They seemed to be the two words Harry wanted to say this morning. Severus continued to ignore the language, hoping Harry would slowly forget them if he didn't react. He had sent a note to Sirius requesting his presence in the morning. The man couldn't hide from Severus forever.

"Shh," Severus shushed as he slid socks on, "calm down, baby."

Severus lifted Harry and rocked him on his hip. Harry slowly calmed down till he was just sniffling.

"I want my teddy bunny bear," Harry said, tears welling in his eyes as he prepared to start crying again for the stuffed animal that didn't immediately appear in his arms.

Severus quickly moved to the crib and reached for the purple rabbit when an idea struck him. He smirked and picked up the toy.

"Here you go – oh no!" As Severus handed Harry the toy, he allowed it to slip from his fingers, dropping it to the floor. "Fiddlesticks!" He said with an angry tone.

"Fiddlesticks!" Harry repeated with just as much anger in his voice as he stared at his rabbit, reaching his arms out to it.

Severus gasped exaggeratedly, covering his mouth as he stared wide-eyed at Harry.

"Harry," Severus scolded, "what a naughty word."

"Fiddlesticks!" Harry said again, amused at the silly reaction his father had. It must be an even better word than the ones his Uncle Siri had said if his father reacted to this one and not the other ones. It was fun to say, too, and it was such a big word.

Severus reached down and picked up the rabbit, holding it so it faced Harry but was out of the boy's reach.

"That's my teddy bunny bear, I want teddy bunny, my teddy," Harry kept babbling as he reached his arms for it.

"You have to promise Daddy you won't say 'fiddlesticks' anymore," Severus said.

Harry gave a mischievous smile before saying, "fiddlesticks!"

"Do you want the rabbit, Harry?"

"I want it, Fiddlesticks," Harry reached for the bunny.

"Now you're name-calling?" Severus clucked at Harry, shaking his head, before giving the rabbit to Harry. Harry hugged it to his chest and stuck his tongue out, blowing a raspberry at his father. Severus snorted before carrying Harry downstairs and placing him in his booster seat – or at least trying.

"I not hungry!" Harry shouted as he resisted being strapped in the seat.

"Harry, stop it," Severus warned. He managed to strap Harry in.

Harry threw his rabbit and pounded his fists on the table.

"Now you're not getting your teddy bunny bear back," Severus decided as he walked into the kitchen where eggs and muffins were sitting with heating charms.

"No!" Harry cried, trying to see over the table to where his rabbit was. "I want my teddy bunny! I want it, now! Get it!"

"If you wanted it, why did you throw it?" Severus asked as he cut an English muffin in half and slapped on a little strawberry jam. He put it on a plate with scrambled eggs and blueberries. He carried it out to Harry, but set it out of his reach since Harry was still throwing a fit. He filled Harry's sippy cup with milk while Harry slowly calmed down from the lack of attention.

"Daddy?" Harry called.

Severus walked out of the kitchen and placed Harry's sippy cup down.

"I'm right here, baby," Severus said. "Are you calmed down now?"

"I want my teddy bunny bear," Harry said, his lower lip trembling.

"I will give it to you," Severus walked around the table and picked up the toy, "but if you throw it again, it goes back in your crib."

Harry accepted the toy and squeezed it tightly, his thumb finding its way to Harry's mouth. Harry watched as the plate of food was pushed towards him and his sippy cup was placed next to it. His stomach growled and he decided that he was hungry after all, grabbing a handful of blueberries to put in his mouth. Severus found a baby fork and handed it to Harry before he could grab a handful of eggs.

Severus put together his own breakfast and sat at the dining table. His great grey owl, Phantom, flew into the room with the daily prophet. Phantom was his newest owl, about four years old. Phantom accepted some scrambled eggs from Severus as the man accepted the paper.

"Here, owl!" Harry called to Phantom, holding his handful of scrambled eggs out to the bird.

"His name's Phantom, Harry," Severus said, reading the first page of the paper.

"Here, Phantom," Harry said as the owl stalked over to him and accepted the eggs.

"Gentle, Harry," Severus lowered the paper as he watched Harry pat the owl on the head, a little rough at first but the boy grew more gentle.

Phantom was a good owl but as all pet owners and parents know, kids could be very rough unintentionally, resulting in a bite or scratch. Severus gave a whistle and Phantom flew off to his perch in the master bedroom.

Harry blew raspberries from his mouth as he tried to whistle. Severus smiled and returned to his paper.

After breakfast, Severus set Harry up in the living room with several plushy toys, knowing that Harry was due for another tantrum before his nap and it would be better to have soft things flying around the room. Harry became engaged in a lively conversation with his stuffed rabbit and a stuffed lion, though Severus could only catch a few words that Harry said since he mostly spoke in gibberish.

Once Harry seemed happy enough, Severus happily waited for Sirius's arrival at the dining table as he finished his paper. Sirius should be arriving any moment.

The floo flared.

"Whoosh!" Harry shouted. "Uncle Siri!"

"Hi, Harry," Severus heard Sirius's voice. "Do you know where Daddy is?"

"Daddy play with me," Harry informed. Severus snorted. "Look at my lion!"

"How nice. Where's your father?"

"You play with me?"

"Not now, Harry, where's Daddy? Can you show me?"

"Look at my frog! Frog go rib-rib!"

"Ribbit, Harry. Severus!" Sirius finally called.

About time, Severus thought, why ask a two-year-old where his father is? They have the attention span of a fly.

"In the dining room, Sirius," Severus responded.

Sirius entered the room. He had to get back to work in thirty minutes, but clearly this was more important.

"I believe you owe me something?" Severus said, quirking an eyebrow at Sirius.

"I know," Sirius said, sitting at the table as well. "An apology. And I'm sorry, I didn't mean to curse in front of your child. I had hit my head on the low ceiling in the back of the closet and I kind of just reacted without thinking. I honestly didn't think Harry would copy me."

"What else would a growing two-year-old whose expanding his vocabulary do?"

"I know, I should have thought about that. But I didn't. And I'm sure Harry will forget about the words in a few days."

"I don't think you know how a child's mind works, and here I thought you of all people would understand that."

"I know, I – wait! What's that supposed to mean?"

Severus sighed agitatedly, glaring at Sirius.

"Look, Severus," Sirius decided to let the insult go. "I'm sorry for my language around Harry. I'll try to watch my mouth from now on."

Severus narrowed his eyes at Sirius before nodding once.

"See that you do," Severus said. "And I accept your apology."

Sirius waited as Severus returned to his paper. He watched the man closely. Severus secretly enjoyed how suspicious and confused the man was acting.

"That's it?" Sirius questioned. "You're not going to blast me across the room? Ban me from ever seeing Harry again? Cut out my tongue for your potions?"

"Why would I do any of that?" Severus asked. "Tea?"

Severus tapped the table and two cups of tea appeared in front of them. Severus picked his up and took a sip. Sirius stared down at his cup before looking back at Severus.

"That's honestly it?" Sirius frowned. Severus wasn't a man that didn't take the chance to get even in some way.

"You've apologized and I accepted. I'm not angry, a little bad language I can handle in Harry. Relax and have some tea."

Sirius eyed the drink suspiciously. He peered into the cup, sniffed it, and poked a finger in the liquid and touched it to his tongue. It was just ordinary tea. As far as he could tell.

"Oh, honestly, Black, if I wanted to poison you, I would strap you to a chair and watch you suffer as I poured the poison down your throat myself."

"How reassuring," Sirius mumbled as he took a tentative sip.

"How had the rest of your day gone?" Severus asked. "After you left my house like the Master of Death was after you?"

"Alright, I guess," Sirius frowned as he drank more of the tea. "Honestly, I was worried that you would come to my house and murder me in my sleep, but otherwise, it ended like any other day."

Severus merely took a sip of his tea. Sirius wondered what was going on. Why wasn't the man attacking him? Why was he just sitting there so calmly? He had taught the man's two-year-old how to curse – why was Severus just letting this go?

"How was the rest of your evening?" Sirius decided to ask to break the tense silence between them.

"Besides listening to Harry happily say words he shouldn't know and doesn't even understand? It was well, thank you for asking. I spent most of the night working on a new invention, a new potion to be precise."

"How exciting," Sirius frowned even more. "What was this new potion?"

"Pardon me, Sirius, but what were the words you taught my son, exactly? Just to refresh the memory."

"Didn't Harry say them enough?" Sirius asked.

"I want to know if those were the only words you taught him," Severus glared now.

"Okay, okay," Sirius put his hands up defensively. He lowered his voice so the toddler in the next room wouldn't hear. "The first word I said was sh-sh . . . sh-sugar!"

Sirius covered his mouth frowning. He was a bit confused. He had struggled to spit the word out and then he had said 'sugar?' What was that about?

"Excuse me?" Severus frowned.

"I told Harry sh-sh-shenanigans." Sirius shook his head and tried again. "Schmoogies! Shucks! Sh-silly piddly woo woo!"

Sirius's eyes widened as he rubbed at his throat, wondering what was wrong. His head hurt a little from the fight to get the right words out. He was so confused – what the hell was wrong with him?

Severus slowly allowed a smirk to appear on his face. Sirius stared down at his cup, realization dawning on him.

"That should teach you not to swear around my son," Severus said.

"Why you son of a b-b-bowtruckle!"

"How interesting, Sirius."

"What did you put in here?"

"Just a weakened version of the babbling draught with a drop of a weakened confusion draught. I told you I had worked on a new invention and it seems to be doing just well. I think I might call it the Choose-Your-Words-Carefully-Around-My-Son draught." Severus gave Sirius a pointed glare.

"Long name," Sirius commented. "When does it wear off?"

"This is the first time I'm seeing it in action, we'll just have to wait and see when it wears off," Severus smirked. "And I didn't make a counter potion for it, I didn't really have the time. You didn't say you still had work, did you? I hope your loose tongue doesn't slip. Who knows when this will end."

"No, no!" Sirius shook his head. "I can't go to work like this! D-d-dag nabit, make this stop!"

"Why should I?" Severus asked. "Now I know you can't slip around my son. I don't need his impressionable brain learning any more from a potty mouth."

"F-f-fiddlesticks you, Severus!" Sirius shouted. He couldn't go to work as an auror saying baby words like these! He couldn't imagine the humiliation when he explained to the Head why he was talking like this. He knew for sure he was going to slip during the day.

"Fiddlesticks!" Harry shouted as well as he toddled into the dining room. Who knew even his Uncle Siri said such a naughty word as his dad called it.

Harry toddled to his father and lifted his arms, saying "up, up."

Severus picked Harry up and settled him on his lap, staring at Sirius with an evil glint in his eyes. Harry rested his head on Severus's shoulder, feeling very tired.

"I believe you have to head back to work," Severus said. "I wish you the best. Say bye-bye to Uncle Sirius, Harry."

"Bye-bye," Harry waved to Sirius.

"Goodbye, Harry," Sirius stood, wishing he could throw that tea cup at Severus – or better yet, smash it over his head.

"Good day, Sirius," Severus actually smiled in the most malicious way he could.

"Have a fiddlesticking great day, Severus," Sirius growled before leaving by floo.

Severus finally chuckled as he rubbed Harry's back, rocking from side to side a bit.

"Weren't those some creative play on words?" Severus asked, giving Harry a kiss. "I hope that when you're older, you use those same words, do you hear me? Or you'll be taking that potion as well."

Harry merely snuggled into Severus more, his eyes closing.

Hope it was a great conclusion.