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SMH

Meaning Shaking my head
Type Acronym
Popularity ★ ★ ★ ★ ★  Popular
Usage Online Only (chat, messaging, e-mail)
Comments

Expresses disapproval, disagreement, or speechlessness; used when something is so bad that you just shake your head; can also mean, "I disagree," "I can't believe it," or "Not again..."

Example "The media coverage on this story is just ridiculous. SMH."
Updated February 7, 2017
Meaning Smash my head
Type Acronym
Popularity ★ ★ ★ ☆ ☆  Average
Usage Online Only (chat, messaging, e-mail)
Comments

SMH can also be used to say you are smashing your forehead on your hand. It is similar to saying, "D'oh!" after doing something dumb.

Example "I just texted the wrong person! SMH."
Updated November 17, 2011
Meaning Scratching my head
Type Acronym
Popularity ★ ★ ☆ ☆ ☆  Uncommon
Usage Online Only (chat, messaging, e-mail)
Comments

SMH can also be mean, "scratching my head," which implies the person doesn't understand something.

Example "Did you understand that acronym?
No, I don't recognize it either... SMH."
Updated September 30, 2010
Information from PC.net
https://pc.net/slang/meaning/smh
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