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1.
noun. A person who believes, argues, or attempts something that is impossible/improbable while under the false impression that it is possible/probable. A grasper might attempt to date someone out of his/her range or argue that his favorite team is going to win the championship despite not having done so in decades. Often, graspers meekly make self-serving arguments that stretch logic. Derived from the phrase "grasping at straws". Made popular originally in the DC area by WJKF's Sports Junkies.
1. Person A: "There's a good chance the Redskins win the Super Bowl this year with Rex Grossman."
Person B: "You are such a grasper."

2. That bar is filled with graspers trying to score with hot chicks.
by Grasper Parnevik March 19, 2011