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Verb -

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 Minecraft game again he's always Peroing."
by The Cold Hard Truth... Ladies January 22, 2013
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