Party Creeper
Party Creeper: A guy/girl who is always appearing to ruin random photos of you and your friends. Can also be referd to "that guy". He or she will wait til the moment the flash is about to go off and somehow get in the picture to ruin it without warning. Another spit this person has is he or she may be the drunkest person at the party making a complete ass out of themselves.
Girl staring at pic: Who is that dirtbag that ruined our pic?
Girls Friend: I don't know him hes a real party creeper.
Girls Friend: I don't know him hes a real party creeper.