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1.
A girl that counts and keeps count of a guys condoms. She does this to see if she is the only one he is having sex with.
If a guy buys a pack of 3 condoms and uses one with a girl, that girl will keep count of how many condoms that guy should have left and try to trap him when the count doesn't match the total she has been keeping.

That girl is a condom counter... She is always counting my condoms and being all in my business.
by Calvin Scharaldi December 01, 2011