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Acronym for Super MotherFucking Weak Ass Shit (S.M.F.W.A.S). Pronounced Smiff-was.

Adjective, describes anything that is weak in nature and deemed to be pathetic, whether it be a choice someone makes or someone who is scrawny and needs to hit the weights.

Originated as W.A.S. but then the S.M.F. was added to imply even more weakness.
Hey Gibinator, go to the gym and lift, you scruffy smfwas n00b!
smfwas by Pouchy The Kangaroo July 28, 2010
Related Words
Shaking My Fucking Head, from original SMH, Shaking My Head, as in disbelief.
SMFH, I watched the guy go bungee jumping with a home made bungee made from rubber bands.
smfh by Greg Elmassian December 16, 2007
Shaking my fucking head: an expression of disappointment in someone's actions or words where smh is not enough. It shows a higher level of disappointment.
Smfh by Thelegendarysonic February 11, 2017
Walk up in the room and I'm the SMFWU (Same Mother Fucker What Up).
smfwu by Timeflies October 18, 2013

SMHWSMDOAT

It means "Shaking My Head While Slapping My Dick On A Table"
I'm SMHWSMDOAT right now
What? That's disgusting and creepy.
kcuf off.
SMHWSMDOAT by ZeKillr October 4, 2016

smhwsmdott 

shaking my head while slapping my dick on the table. used to describe being utterly astounded by someone's stupidity. a stronger form of smh
person 1: jet fuel cant melt steel beams
person 2: smhwsmdott you are so stupid
smhwsmdott by jack empty May 4, 2016