Neutral idea: Even as lenient as Japanese are about nudity and the age of consent, there are many good reasons to keep them gender specific, the least of which is stuff you really don't want to see or know. On the flipside, there are some really good looking cosplayers I'd like to visually verify since I've already undressed them with my eyes anyway...Then again as skimpy as some costumes are, little is left to the imagination anyways.
"Poor man's liquid nitrogen" as a torture agent the next time somebody uses your dumpster swimming pool for their trash.
"I wasn't counting cards, I was cheating."
"Ugh. you give me hives."
"It's Tee-revor time!!!"