You and Wally have been great friends since childhood, and as you guys have grown he'd like to bite you, not hard bites just little nibbles on the arms and shoulder, you didn't know why he did it, he just said bc it's fun seeing your reactions. One night he'd continue to do it and wouldn't stop even though you told him too, but ofc he didn't listen, you started getting annoyed, and as he was about to bite you again you suddenly grabbed the roof of his mouth, he froze, he was confused, he looked down at you with a raised eyebrow

Butcher: "Wha are you doing....?"

His voice was slightly muffled since you hand was in his mouth a bit