Top Definition
Slapping a girl (or guy as the case may be) with your testicles across the face
I kaplunked my girlfriend last tuesday
by Japlunker November 29, 2010
2 more definitions
a person who parties a lot and i mean a LOT, fun and naturally chill person, a josh or a chris
"yo its so kaplunk dude" "yaa"
by tonysmoney December 12, 2013
the sound hard shit makes on the toilet water
I just took a massive kaplunk after Thanksgiving dinner!
by Sammy Yassin November 27, 2004

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