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1.
to smack people(s) with a potato
bob Mc Grubered lenny, because lenny is a douche
by FJ November 17, 2004
 
2.
Reffering to Grover the bum. Giving trash to a sesame street character and having him turn it into something useful
Adam completely McGrubers his RC car.
by Scot Macumber April 03, 2008