Top Definition
Smoking
My
Fucking
Ass
Off

An acronym used by smokers via text or instant message to tell the person on the receiving end that they are smoking.
Stevie: "yo where you at?"
Joe: "At the coffee shop smfao"

Wizzle: "What you dooin on 4-20?"
John: " Chillin on the corner smfao"
#smoking #clean #bud #weed #bogies #alaskan thunderfuck #my #ass off
by Jay<3Tee April 13, 2010
Sweating/ed

My

Fucking

Ass

Off

!
This Past Summer When Ever I Went Into The Attic

I D SMFAO ! It Was So Fucking Annoying !
#sweating #fucking #ass #off #summer
by D-ROC21 September 14, 2011
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