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to be extremely creepy on purpose and make people, usually girls, uncomfortable. pretending to be quagmire from family guy is pretty standard.

examples: smelling someone's hair, making everything into a sexual innuendo, saying giggitygiggity and doing the quagmire head motion, standing in the corner at a party watching people, lurking on someone's myspace page...etc
"what the hell is he doing standing in the corner, not talking to anyone, wearing his aviators and drinking?"
"he is creepin it strong"
by xXxCReePCORexXx September 20, 2007
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