You single yet. When you know a really good looking girl who has a boyfriend and your in line for some fun.
by GMLK May 14, 2013
Expression of delight or joy, often at unexpectedly good turn of events.
Written form often capitalised. Origin believed to be corruption/mistype of Yay. YSY is to "Yay" what teh is to "the".
Written form often capitalised. Origin believed to be corruption/mistype of Yay. YSY is to "Yay" what teh is to "the".
by Tenrex January 10, 2009