One who strips naked in a bar while trying to seduce older grandmas. Or a 20'ish year old man who makes out with grandmas who are missing teeth while whispering dirty language in their ears. OR a creeper who tries to have sex with an woman who is @ least 50 years older than him and has nasty wrinkles.

A person or people that purposefully causes chaos or mischief within a group for the sake of entertainment.