The Hermit Crab 

the act of inserting two fist's into a woman's vagina, and then once in her musky cave, the lower fist sprawls out and does a tickling motion using the fingers !!

Dave:How did go with that girl last night??
Jim: Ya, it went really well, I used The Hermit Crab on her !!

The Hermit Crab by TheMightyBeef August 31, 2012

feeding the hermit crab 

a paticularly stinky chore, especially if you haven't cleaned the cage in a while.

dad:get to feeding the hermit crab!
Kid: eeewww is that crab poop? I didnt know crabs pooped....yuck!

feeding the hermit crab by Lei Lei January 11, 2009

the angry hermit crab 

While fucking a girl on the beach, take your dick out and stick it in the sand. Then put your sandy dick back in her vagina, like a hermit crab going back into its shell.

I was fucking my girl on the beach so i just did the angry hermit crab on her.

the angry hermit crab by JoeVirus November 24, 2006