No it means NO !!!
SMH on Facebook typically means 'shaking my head'.
"SMH" stands for "shaking my head" and is often used to express disappointment, disapproval, or disbelief in response to something shared on Facebook. It's a way for people to convey their reaction non-verbally in a text-based conversation.
cabecear = to shake one's head cabeceo = I shake my head
Shake Your Head was created in 1983.
As a nod of approval. Generally, it always means yes, and it never means no.
If the person is shaking their head left to right it means "no" or it means they are shocked; however, if they are nodding their head up and down they mean yes
You head hurts when you shake it because your brain hits against you skull
It usually means shake my head. But lately people have starting abbreviating random expressions like smk, or slap my knee, so it could mean whatever the person wants it to mean.
Acronym for 'shake my head' or 'shaking my head.' Usually used when someone finds something so stupid, no words can do it justice. Sometimes it's modified to 'smfh' or 'smmfh' by those that prefer profanity in their internet acronyms.
shake
shake my damn head