SMH
Updated: 12/31/2022 by Computer Hope
Shorthand for shake my head, SMH is used in chat communications as a sign of disappointment or disapproval. Below is an example of how this could be used in chat.
User1: It's just format a:
User2: Ohh crap, I did format c:
User1: smh
Note
Some may add an extra expletive and use SMFH, which is short for shaking my f*(#ing head.