What does SMH or SML stand for on fb or twitter?
SMH: Shaking my headSML: Story of my life
smh stands for shaking my headThis might help: http://www.urbandictionary.com/define.php?term=smh
Scratch my head send me link.
SHM: Shake my Head
Those answers are right but if you have any other things you nees to know check urbandictionary.com