1 definition by Evil Dr Fish

Top Definition
Acronym for: Sand In Your Vagina...

First coined on South Park by Cartman.
"Easy tiger, don't bite my head off - have you got siyv?"

"Man... she's in a bad mood today - she must have Sand In Her Vagina!"
by Evil Dr Fish January 12, 2010

Mug icon
Buy a SIYV mug!