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1.
An acronym which is a variant of SMH; it means "shaking my damn head."
Paris Hilton was released from jail after three days, SMDH.
Por Metaview 22 de junio de 2007
 
2.
An acronym standing for "shaking my damn head"; usually typed on blogs or in text messages to express disappointment, sadness, disgust etc.

Also known as SMH standing for "shaking my head"
"I hate to see really fat people try to wear too little clothes." SMDH
Por Mrs. Judy 24 de marzo de 2009
 
3.
An acronym which is a variant of SMH; it means "shaking my dog's hand."
Whenever someone types "SMDH," I assume they mean "shaking my dog's hand." Aw, cute dog!
Por turncoat 05 de mayo de 2014
 
4.
This is an Acronym that originally meant "Silently Masturbating During Homework". It was converted into "Shaking My Damn Head" when a Facebook member who often used this term was asked, "What does that mean?". The individual responded with a quick and witty answer. "Shaking My Damn Head". The individual who asked what SMDH means responded, "You sure do shake your damn head a lot".
Por AnwarSadat94 14 de mayo de 2011
 
5.
originally meaning, "Silently Masturbating During Homework", smdh now means "Shaking My Damn Head". You could argue it still means the same thing.
A: I always smdh, especially when studying for finals
B: oh, you shake your damn head cuz studying's so stressful.
A: um, sure, lets go with that.
Por Yeeeaaah! 20 de octubre de 2011
 
6.
It means "shake my dick head". But you also have to say "SMDH at you," otherwise, you would just be shaking it for no apparent reason except to get off. So, it basically means the same thing as the original except more of a tisk tisk with exposed genitalia.
Dude 1-"Man, I lost that chick's number from the other night!"
Dude 2-"Sigh...smDh at you."
Por CaryGrant 18 de abril de 2011
 
7.
Means "shaking my dick head." Used when referring to masturbating
Friend: "Hey, wanna come over?"
Me: "Give me 5 minutes... smdh"
Por Sr_Papacito 04 de diciembre de 2011