Top Definition
girls who have sexual intercourse with multiple boys who play on the otters hockey team. these girls normally attend every game and think their "the shit". and god forbid you text any of the guys they've slept with.... (which is on average, more than half of the team).
girl1: oh my god. emily is such an otter thumper.. she slept with half the team already!
girl2: what an otter thumper!
by puckbunnyx November 18, 2009

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