look up any word, like smh:
 
3.
Smack In Your Face
can i have some appeals? SIYF well then
by nothing works July 08, 2011
 
1.
Congrats. You are the 6 millionth person to have posted that question. SIYF.
by rumsponge February 21, 2007
 
2.
shit in your face
used for texting... I whooped your ass in madden last night siyf.
by ilikeisnice May 01, 2010
 
4.
So is your face.

Fancy comeback only trumped by "Your Mom goes to College!"
Person A: You're a dumb fuck!
Person B: SIYF!
by fingal October 08, 2006