being just flirty enough to make someone comfortable, and then whipping out a little creep to keep them on their toes. if they're a perv too, it'll work out. if not, it was never meant to be.
1.) To wander aimlessly searching for a social group to merge with often attributed to clingy people.
2.) To join a group when one or more is watching a video or playing a game
"Dude will you stop breathing down my neck you're Peroing again."
"Dammit Jon joined our Minecraftgame again he's always Peroing."