They were surrounded by vampires, werewolves, ghouls, an astronaut, various slutty nurses, and three slutty pumpkins. Sam loitered self-consciously at the door while Dean strode into the party like he was walking onto a yacht.
"Stay sharp, Sam. Any one of these could be the shifter!"
"Why did I have to come as Cat Woman?" Sam grumbled, immediately regretting it as he realized he'd fed Dean his perfect cue to say –
"Because I'm Batman."
Sam tugged irritably at his armpits and crotch. "All this rubber is making me sweat."
"No, Sammy. Remember: Animals sweat, and men perspire, but ladies glow!"
A/N: also inspired by the Live Journal, Spn_bigpretzel DEW challenge: Hallowe'en costumes and dressing up