1 definition by BPsince92

Top Definition
an acronym deprived from smh... it means shake my mother fucking head hard...it is used whenever something is just too ridiculous to simply shake your head.
Becky: yeah, we weren't able to get in the club since I lost my I.D.

Tweety: SMMFHH
by BPsince92 June 28, 2011

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