It is used to describe someone that is super outgoing with BIG DICK ENERGY. A Klapper is usually a nice person that everyone likes and he is a very nice guy. He is very funny, has light brown hair and greenish blueish eyes. Everyone wants to have a Klapper as a friend.
Guy: Hey gurl let me help you with that HEAVY box.
Gurl: Wow your name must definetly be Klapper, because you are the man of my dreams. PLEASE MARRY ME.
by Timmy_turn_yourworldupsidedown September 18, 2018
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Big, dangly testicles. Heavy hangers. Big ol’ ball sack.
He teabags me every night with this klappers. It’s like two tennis balls in a sock.

My uncle showed me his klappers.
by Eaton Holgoode February 1, 2018
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what happenes when your friend spends the night out with ur mom
my anus:ur mum is hot anda super klapper
by ur mom is my klapper September 11, 2021
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