bag of crabs 

a stinking cesspool of venereal and sexually transmitted diseases. also known as a walking bag of crabs.

that walking bag of crabs left your crib this morning?!? good luck, motherfucker . . .

bag of crabs by avisualperson November 8, 2007

Bag of smashed crabs 

To have a face like a bag of smashed crabs

im sorry dude, but your face is like a bag of smashed crabs

Bag of smashed crabs by Battlephone October 6, 2009