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2 definitions by turncoat

 
1.
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!
by turncoat May 05, 2014
 
2.
The act of looking over one's shoulder, for a second glance at someone who caught your eye.
Dude, that girl just shoulder-checked you; why don't you say, "Hi"?
by Turncoat August 03, 2009