Smdmfb 

Suck My dick Mother Fucking Babies :)

Holy fuck. Smdmfb. You're an asshole...

Smdmfb by Your best friends jizz September 26, 2010

SMDMF 

Suck My Dick Motha Fucka!

A common abbreviation in MMO's. Usually stated before someone gets shot.

*Team A Guy Captures The Flag*
Team B Guy: "SMDMF!"
*Team A Guy Gets Killed

SMDMF by Technical V Man January 12, 2009

SMGDMFBAH 

shake my God damn motherfucking bitch ass head

Croatia: we lost the world cup finals

Croatian Citizens: SMGDMFBAH

SMGDMFBAH by Jasian1028 September 9, 2019

SMDFB 

“SUCK MY DICK FROM BEHIND”

Person 1 - boy stfu and gts.
Person 2 - you better SMDFB.

SMDFB by Alaryk February 15, 2021

smdmf 

Litterally means "suck my dick mother fucker", Most commonly used in chat rooms, text messages, or IM.

Gamer1: Stop killing me!

gamer2: SMDMF!!!!!!!!!!

smdmf by Uncle Jordan January 17, 2009

Smmfb

"suck my mother fuckin balls"

"bro smmfb" homie "rude mf"other homie

Smmfb by Shadowmaker@1 March 17, 2023