A SMH - SMH is a short way of saying 'shaking my head' and it's used

SMH is a short way of saying 'shaking my head' and it's used when you're so mad or confused you could just scream.

SMH when my crush didn’t even text me back.

SMH when my dog peed on my brand new shoes.

SMH when my mom tried to sing me to sleep and it was just noise.