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When having sexual intercourse and you hear the clapping sound of two persons thighs smacking each other; another word for sex derived from the south; sexual intercourse.
ex 1: "Dang dog, me and my homie James about to go klahp these two girls straight from the back."

ex2: "Yo I just heard you klahpping in the other room."

by Willie Fresh February 21, 2009
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