shitbag

noun

1. (vulgar)A colostomy bag.
2. (derogatory, vulgar)A worthless or despicable person.

   “I told him what type of shit bag he was and that if I had not taken a strong liking to him I'd kill him. But he had undone my feelings and I was glad we had never got it on.”

   “I came across a drunken couple shouting into these machines outside a quayside restaurant. "Shitbag calling fuckface, shitbag calling fuckface, are you receiving me, over?" "Fuckface to shitbag, fuckface to shitbag, I am receiving you, over". […]”

3. (vulgar)The stomach.

   “I had to get a hold of this situation in a hurry, so I picked up the baseball bat we used to stun any sharks that came aboard when we were fishing and whacked Foulkes straight in the shit bag. He collapsed on the deck!”