SMH is an acronym that stand for "Signal Message Handling." SMH can be used when someone has sent an email and would like conformation that the email has been received.

SMH can also stand for "shaking my head." In this sense SMH can be used in the place of words such as disappointed or confused. SMH is the action that sometimes accompanies the feeling of disappointment or confusion.
Sally: Hey, I sent you the email about the report, SMH.

George: Ok, I'll check for it when I get home.
by acemanfromawesomeness November 03, 2010
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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.
trick1: i got a headache...i hit myself in the head with my knee while trying to do situps.

trick2: smh
by trickologist February 14, 2004
means shaking my head. abbreviated
he did not just wear that shirt S-M-H.
by babyG s'rah August 12, 2006
The internet acronym for the words 'shake my head'. Usually used when disappointed in someone/something.
Vincent: So how was prom?
Peter: It was great!
Vincent: You dance with alotta girls?
Peter: No. Just went 'meow meow meow' the whole time.
Vincent: SMH
by djphotik May 16, 2006
1) Shaking my head
2) Sydney Morning Herald
You read the SMH? SMH
by 1melblad25 February 21, 2014
An Internet acronym used in text (SMS) messaging and in social media posts such as appear on Twitter and Facebook. Although many people believe it stands for "shake my head" or "shaking my head" (as in disbelief or disdain), the true meaning is "so much hate."

However, due to the widespread use of "smh" from those who have learned its meaning incorrectly, it can be assumed that many who use it do so in the erroneous meaning of "shaking my head." It can usually be read either way.

"smh" is similar in meaning to "fml", but more angry than despairing.
"My little brother keeps telling everyone he'll be able to play in the Super Bowl next year, and he's only fourteen! smh"

"The government has instituted a new tax on, get this, twisty-ties. smh"
by JollyK February 15, 2012
shaking my hijab

(hijab means headscarf in Arabic, and it's worn by Muslims women. So a hijabi typing "smh" would mean, shaking my hijab.)
There is no halal food left, I'm smh (shaking my hijab).
by vamanos April 06, 2015
So I know a lot of people say smh means "shake my head" or "shaking my head" but I think smh really means "so much hate" and you know what I may be wrong but idc because to me it means "so much hate" so guess what SMH!
Omg she's so annoying ugh smh
by Meeeeeeee8 October 22, 2014

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