"I could use another glass," said Sirius, getting up from his chair. "Anyone else?"
"A butterbeer, please," replied Hermione, which was met with nods from Ron and Harry. George lifted his still-full butterbeer and clinked it with Fred's, which sat on the table, acting as a paperweight for whatever plans the twins were hunched over. Fred waved Sirius off, intently reading from the potions book he had 'subtly' taken from Hermione's stack.
"Refill," was all Remus said as Sirius passed him, pushing the tumbler into Sirius' stomach.
Harry looked up from the chess game he was losing at. "I'll help," he said, following Sirius into the kitchen.
After a few seconds, Hermione dropped her book on her lap. "Oh no." She crossed her fingers on both hands. Even with her softly spoken words, the other four occupants of the room looked over at the shut-eyed girl.
It was Remus who spoke first, recognizing the muggle gesture of the crossing of fingers, "Hermione? What's wrong?"
Then, a crash from the kitchen and a strangled yell. Hermione's eyes popped open.
"He found my avalanche."
Hermione and Remus locked wide eyes, and then Remus started howling with laughter, wheezing out sounds. "What does that mean?"
Then,
"REMUS!"
And,
"There's no need to shout, Sirius!"
"It's my house, Molly, I'll shout if I want to!"
Hermione, very worried and trying not to laugh herself, spoke quickly, "remember earlier when I said 'I'm trying not to create a butterbeer avalanche' and Fred said to 'let it happen?'"
Fred and George, having caught on to what had happened, joined Remus and Hermione in their laughter this time.
"So I let it happen..." Hermione worried her lip anxiously as the kitchen door slammed.
Which, obviously, was George's cue to yell, "Hey Sirius, could I get a butterbeer?"
When Harry and Sirius returned and Sirius glared at Remus, Remus only pointed at Hermione, who grinned sheepishly up at him. Harry started explaining the events of the kitchen to Ron.
Sirius' eyebrows rose, and he pointed at Hermione, silently asking if it was her who caused the butterbeer avalanche.
Hermione nodded, pressing her lips together to try not to laugh.
Sirius squinted his eyes, huffed out a breath, and sat back down in his chair. "You're lucky I like you," he said, harshly placing the bottle on the table next to her.
"Um... Where's mine?" asked George.
"Oh, you absolutely don't get one." With that, Sirius handed Remus his drink and went back to their conversation.
Hermione grinned.
"I think," said Fred, "I'm going to get 'he found my avalanche' tattooed."
"The delivery… mwah," added George, miming a little kiss.
"Would you write it down," Fred asked, dropping an elbow to the ground and grinning up at Hermione from his position on the floor, "so I have something to show the tattoo artist?"
Hermione, about to reply, was interrupted by Ron. "Oi, gits! Stop making fun of her!"
Leaving Hermione in her confusion over the interjection (she didn't think they were making fun of her…?), everyone turned back to what they were doing before Sirius left to get drinks.
Slipping a spare bit of parchment onto the closed cover of her book, Hermione grabbed a quill and wrote something down.
Thirty minutes later Ginny came to get them for supper, lamenting being stuck in the kitchen with Molly all day.
And Hermione slipped the parchment onto Fred's notes as he and George tidied them up.
He had say tattooed. Hermione knew the makings of a bet when she heard it.