A combination of collar and poppin'. Refers to the act of popping one's collar. See also collar popper and popped collar.
Those preppie boys are always coppin.
by Andy, Trey, Loren (Chi Phi) December 17, 2004
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Mid western slang mean to purchase something.
Joe, did you see those new jordans? I'm coppin them when they come out.
by rory_breaker March 16, 2006