Although it is supposed to stand for "Shaking my head", it is also used to say "Somehow"
I threw a rock at his window, but smh he paid me a drink
they betrayed us and gave the meth to the other gang, but smh it's no surprise
Smh stands for shaking my head
Friend:Did you hear about the remake?
Me: I know right smh
smh this bitch doesnt even know all the lyrics to deepthroat by cupcake
Smh stands for “sorry monkey hoe”
Him: smh
Her: I don’t know who he calling a sorry monkey hoe…cause it ain’t me