Usi

What is Usi?


1.

Unidentified Sex Injury

Those bruises, cuts, muscle strains, and torn ligaments that happen after a night of vigorous sex - and you cannot remember exactly what you did to cause it.

"Holy crap! My one leg is completely covered in bruises, but I don't remember what we were doing and how it got that way!"

"Dude, that is a serious USI."

See sex, cougar, ouch, mystery, one night stand


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