***Hey there, this is my first stab at a fanfic, so just bear with me (South Park won't be large part of the plot, this is a Phineas and Ferb fanfic after all and I don't think I need to be rated M for any reason. I DO NOT OWN ANYTHING.) All PNF characters belong to Dan Povenmire and Jeff "Swampy" Marsh. All South Park characters belongs to Trey Parker and Matt Stone.***
It was another bright sunny day in Danville. At 7AM sharp a certain red haired boy shouted, "Come on Ferb, wake up, today is our first day of high school!" Ferb just snorted and turned. The red haired boy threw a pillow at Ferb's head, which elicited a rather annoyed, "Good morning Phineas, but you know it's another half an hour before the bus is here?" "Yeah but don't we want to be early? Come on Ferb, this is the FIRST day of high school! Imagine new atmosphere and endless possibilities that await us!" Ferb and Phineas changed and strolled down the stairs, greeted by Linda saying, "Boys, first day of high school is here, are you guys excited?" "Yes mom! We cannot wait!" A stoic Ferb did a thumbs up. A few minutes later, steaming hot plates of eggs and bacon were served for the brothers (and parents of course). "Five more minutes Ferb!" Phineas exclaimed and they both quickly bolted the breakfast. Just with a minute to spare, the inventing duo were ready for their first day at Danville High.
Waiting outside at the designated area, they were soon met with the rest of the gang. Most importantly to Phineas though, was when he heard the usual catchphrase "Whatcha doin?" from Isabella.
"Hey there Isabella, we are just waiting for the bus."
"You know what classes you are taking? Here is my schedule."
"Hmm, looks like we have the same classes. Looks like actually Ferb, Baljeet, and Buford are having the same classes too."
Isabella looked pleased, but Phineas was still oblivious as usual.
"Yeah so I get to be with my nerd!" exclaimed Buford.
"Well, it looks like maybe today is a wedgie free day." replied Baljeet.
"What did you say nerd?"
"Oh nothing, just nothing." Baljeet said quickly.
"Hey guys, the bus is here!"
They boarded the bus which was full of talking and gossiping students that were taking their first minutes into Danville High. The gang just sat wherever was empty and to the luck of Isabella, Phineas sat with nobody (Ferb was behind him, fully knowing Isabella's crush on Phineas). Isabella took a seat next to Phineas and just waited in a somewhat awkward silence. After a while, Phineas said, "Hmm… I wonder where the smell of vanilla is coming from. It smells so good!"
Isabella sniffed and asked, "Do you mean my new shampoo?"
"Yeah it seems like it, can't get enough of it."
Isabella blushed, but knew this wouldn't amount to anything.
"Well it looks like we are here guys, welcome to the first day of Danville High!" exclaimed Phineas.