Essentially a wicked slapshot in hockey. When a player takes a one timer, heavy slapshot towards the goalie.
The Dman passed the puck over to the winger for a greasy clapper from the circle.
by Hockey junky March 29, 2018
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A rash looking STD you get when rubbing a mans penis inside the bend of someones knee.
1. Did you hear Joe gave Jamie the knee clapper on the church trip

2. My parents are going to kill me if they find out I have the knee clapper
by 2 girls half a brain September 26, 2013
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When a prism claps their knees when they walk.
James Horton is a knee-clapper when walking the halls of Cranston West
by MclovinDATa$$ April 24, 2018
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What you say to a person name Kole who claps big and has "the clap"
Kole is a big clapper.
by Therealdeffitionmaker123456789 October 15, 2018
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When you slap a girl with your dick twice then shut the lights off
I finished off by giving her the clapper and went to bed.
by December 15, 2020
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