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
Random Words:
1.
To not be able to fight but can talk a lot of shit online, when your really 16 and in the band. Also see fag that likes fat chicks.
Yo..