SIYF 

Search Is Your Friend

Congrats. You are the 6 millionth person to have posted that question. SIYF.

SIYF by rumsponge February 22, 2007

siyf 

shit in your face

used for texting... I whooped your ass in madden last night siyf.

siyf by Sammy J32 May 1, 2010

SIYF 

So is your face.

Fancy comeback only trumped by "Your Mom goes to College!"

Person A: You're a dumb fuck!
Person B: SIYF!

SIYF by fingal October 8, 2006

SIYF 

Smack In Your Face

can i have some appeals? SIYF well then

SIYF by nothing works July 8, 2011

SIYF 

Sand in your face/shit in your face

Hey dude, I heard your sister’s easy.

SIYF !

SIYF by NikkeJ February 15, 2020

SIYFH 

It refers to an old Navy Chief's curse aimed at the officers. It is an acronym for Shit In Your Flat Hat

The Chief signed the letter with a flourished SIYFH and a note to kick some ass.

SIYFH by J T Kelly November 17, 2006

siyfjoacygjt 

every black parent has said this at least a thousand times.

so if yo' friends jump off a cliff, you gon' jump too? (siyfjoacygjt)

siyfjoacygjt by mocha_123 August 30, 2020