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1.
ysf
Abbreviation for 'You Sick Fuck'.
I can't believe you dipped your balls in the pizza dough, ysf.
by Duane April 24, 2005
47 21
 
2.
YSF
You Stupid F***.
Michael, YSF, you miss the whole point.
by Rudy1957 January 28, 2009
11 6
 
3.
Your So Fucking Sexy
Damn girl YSFS
by SmexxySnarf June 29, 2011
1 0
 
4.
YSF
short for "You're So Funny"
lol that was a good joke! YSF!
by MAN (My anonymous name) February 19, 2011
4 3