person 1: i really don’t like that girl tbh
person 2: oh yh she can SMH
an abbreviation used to say shaking my head mostly used in text
guy 1 : she met a paedophile
guy 2 : she's a sket always going for older guys
guy 1: smh what a fucking hoe
guy 2: ahlie
It is SMACKING MY HEAD not Shaking RINNY.
Rinny is smacking her head "smh".