concept: drarry being each other for halloween (after harry had to lengthily explain the concept of the holiday to draco)
draco wearing circular, wire-rim glasses and painting a lightning bolt on his forehead, purposely messing up his hair and making snarky comments like:
“rah rah, I’m Harry Potter, here I come voldy-voldy!”
“ooh, look at me, with my broomstick, and my scar.”
harry gelling his hair up, standing straight, and always looking disgusted with everyone, saying things like:
“have you heard about my blood? yeah. it’s pure.”
“mmm, potions sure do turn me on.”
and at the end of it all, draco is snuggled up to harry asking a thousand questions while they watch the nightmare before christmas.