Most people enjoy cosplayers for what they are: folks hangin' out in cool outfits paying tribute to their favourite characters. Sadly, some like to totally miss that, and get all creepy.
Buzzfeed went to the New York Comic-Con with a ledger and pen, and asked some cosplayers to write down the worst thing someone had said to them while in costume.
Some would make you groan. Some would make you roll your eyeballs. Some would, of course, make you feel incredibly uncomfortable, perhaps even fear for your safety.
Way to go, creeps!