Mammoth Cave 

a very very very VERY wooly vagina.

I remember all the mammoth caves from the 60's.

Mammoth Cave by Cake Beard the Pirate May 22, 2009

Mammoth Cave 

a deep, dark abyss (ass hole) in which large mammoths (shit) dwell. When the mammoths (shit) become too crowded they tend to exit the mammoth cave (ass hole) in a hasty manner.

"My mammoth cave is way too crowded man, i need to release some mammoths."

Mammoth Cave by Joe Mingus December 3, 2006

Minnesota Mammoth Cave 

(Noun)
-A sex act typically performed by three sexual deviants whereby two morons hollow out a Kansas City strip steak and dock their wankers together while the third begins to eat the steak.
-A Minnesota Mammoth Cave combined with a shrimpboat yields an Indiana Dick Lick.
-If a Minnesota Mammoth Cave is combined with 2 Kennebunkport Surprises you have an Alabama Hot Pocket, or for international purposes, a Nova Scotian Reverse Sausage Docking Port. (Illegal in 49 states, except Alabama, where it is a family tradition).
-A Minnesota Mammoth Cave is the leading cause of chronic dick jasmine.

Did you see that red neck, hillbilly, and Canadian doing a Minnesota Mammoth Cave? They are definately getting dick jasmine!

Minnesota Mammoth Cave by FrostedTips918 February 17, 2019