A crappy throw, toss, etc., where the person tossing the object misjudges the throw and completely misses the intended recipient, target, etc.
Lorenzo: "T-Bone, toss me a can of beer!"
T-Bone: "Here ya go!" (Throws beer 3 feet to the left of Lorenzo)
Lorenzo: "Dude, that was an Underhanded Mustard Russian if I've ever seen one!!!!! Now the beer is ruined!"
by Lorenzo Warshington July 22, 2010
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