Remus hated bubblegum. Sirius loved it, mostly the blowing bubbles by Remus's ear, though.
'Pop' Sirius blew another bubble.
"Would you stop?" Remus had had enough.
"I'd like to see you make me."
Remus sighed, trying to concentrate on his book. 'Pop.' Growling under his breath, Remus closed his book and looked at Sirius, eyes narrowed. Sirius flashed a grin. 'Pop.' Remus leaned over, grabbed Sirius's face, latching his mouth onto Sirius's. He shoved his tongue into Sirius's mouth, pulling away when he had the gum. Remus smiled triumphantly at the amazement on Sirius's face. Remus decided he liked bubblegum.