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An American football term for the act of hitting the opposing quarterback so hard the he is either: A.) physically unable to return to the game. or B.)So terrified of being hit again that he is unwilling to return to the field.

Made popular by Clay Matthews of the Green Bay Packers.
Fan #1: Holy shit dude, did you just see how hard he just hit Jay Cutler, there are body parts everywhere?

Fan #2: Yea he's done, that was definitely a Claymaker.
by skgutt January 17, 2011
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