A term used to describe the act of a female, immediately after sex going through her partners; drawers, laundry baskets, closets and other areas (such as under the bed) in search of traces of evidence of the recent presence of another female.

As some girls and women feel guilty or insecure directly following sex, they go in search of evidence of infidelity. This is done to ease their discomfort by either confirming their suspicions and thus validate their insecurity, or disproving these suspicions which in turn eases their temporary depressions.
Jill: I puked after Brad crawled off of me...it just didn't seem right.

Jane: What Happened?

Jill: I did a post-coital panty raid...found two thongs that weren't mine...that bastard.
by urbanr0cker May 13, 2008
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