1. One who is "creepy", or does "creepy" things, such as follow you closely, stare, breathe loudly, and watch your every move.
2. Someone, usually a friend, who continually pokes their head into the frame just as you are taking a half-decent picture. How obnoxious.
3. Hugh Hefner is to hot women as creepers are to you.
1. That guy has been staring at you every time you've gotten on the bus... he's such a creeper!
2. Dude! You're in EVERY picture.... you're such a creeper!