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1 definition by Professor Lafferty

 
1.
the act of being a creeper, characterized by intense observation (eg. stare downs, unsuspected touching, etc.), stalking, and seduction. Conversing with someone who is creepin' will result in almost pure sexual innuendo.
"They've been creepin' on Lil' Jimmi for days! I think he's starting to get turned on..."
by Professor Lafferty February 03, 2009