SMDIYF/SMDOYF 

Slap my dick in/on your face.
When someone is giving you head and you slap them in the face with your penis.
Can be used in place of SMD.

"I just beat you on Trivia Crack! SMDIYF/SMDOYF bitch!"

SMDIYF/SMDOYF by peasncorn January 3, 2015

SMDIYF 

Shaking My Dick In Your Face

Andy: i hate you, suk ma dick
Lee: SMDIYF

SMDIYF by ass-backwards January 19, 2011

smdayf

short for "smacking my dick across yo(ur) face"

woman: YOU SO DUMB. SMH
man: DON'T YOU SMH ME, WOMAN! SMDAYF

smdayf by imaninjarawrawr May 3, 2011

smdyf 

Means Suck My dick You fool

He: you son of a bitch
Me:SMDYF

smdyf by Kpone January 11, 2017