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Definition 1: When a bunch of dirty skanks jump out of an airplane, and they have a bunch of dirty coochies and their parachutes are hanging from their clits.

Definition 2: When a girl uses her vagina curtain as a chute after jumping off a building or cliff. The equivalent of base jumping. Also see: vagina curtain
Example 1: Jennifer, Chloe, and Mary went clam jumping last weekend. Their chutes got tangled, and tore out their vaginas. Ouch!

Example 2: Beth went clam jumping off the Empire State Building by using her vagina curtain as a chute.
by Retard Clan May 30, 2008
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