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
Internet acronym for "suck my hooha" aka suck my vagina.
mandy: you're so hot unf! please smh ;)
chris: oh my god of course baby let's go up to my room and i'll show you ;)
by indiandyke69 November 14, 2012
"Shooting My Horse"

Because when people say stupid junk on Facebook you gotta shoot something.
Dude this chick is so dumb, i have to smh

Joe: Smh Bro...

Aaron: Shooting My Horse?

Joe: What?

Aaron: Sicko...
by Da Bomb Diggady October 08, 2011
sugar meets honey. when something is incredibly good or sweet, like sugar with the added awesomeness of honey.
Earth, wind and fire is in town AND Bootsy Collins is opening... SMH!
by vincethetoothman September 08, 2011
The female version of "smd" (suck my dick). This is "suck my hole".
Girl 1: Hey, hoe.
Girl 2: smh......
by wheels11 July 26, 2011
So much hair.
M: I'm back
N: You took three hours...for a shower?
M: I was untangling my hair, it takes a long time.
N: smh
M: ._. ??
by Nathy-Bear June 21, 2011
smh = "Smacking my ho".
Used by young folks these days because abbreviations are all the rage.
Guy 1: "Ay brotha, whatchu doin' tonight?"
Guy 2: "You know, smh."
Guy 1: "Word."
by Farty Fran April 18, 2011

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