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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
 
1.
The act of intentionally bumping another person's shoulder with your own shoulder as you walk past them. It is meant as a display of open aggression or simple disrespect depending on how roughly the shoulder check is performed.
Janet shoulder checked Denise on her way out, hoping for a fight.
by Miami Mistress November 30, 2009