the act of cumming on ones hand then slapping someone with the cum hand.
"what are you doin g?!??!"..."jacking off get out!"...."whats in your hand???""....*Clump!!!!*.. (the action of clumping)
by FunnyWhileClumping February 03, 2012
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The act of "humping" in a "clump" of trees. Can be used in a broader sense to embody all acts of alfresco activities.
Me n the Misses went Clumping today
by Hesteroy1902 April 22, 2011
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If that chief don't show up with my money he's gonna get a clump in da face ya know
by sy662 February 02, 2009
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The act of dehydrating ones self before masturbation/intercourse, in order for your sperm to look like cottage cheese
Dude 1: Tom's mom told me the other day she was lactose intolerant but she loves cottage cheese.

Dude 2: So?

Dude 1: So I decided to give her a good clumping.

Dude 2: Gross!
by CommoDick September 12, 2011
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The result of a errant facial where semem beads are stuck in the girls hair creating a clump.
I was going for a money shot but I guess my aim must have been off, boy did that girl get clumped.
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