A mutation that allow you to eat just about anything and gives you the chance to barf up parts from the thing you ate. Also gives a +1 to Climb and a -1 to endurance.
The ability to randomly get parts buy eating debris is obviously useful to a crafty character and can provide a good way to get raw materials even if your scavenge sucks. Also means you'll never have to buy food again because you can just eat bricks. The plus to climb is always nice as well. Grief your friends by eating their clothes and weapons.
A negative to endurance will hurt your scavenging skill, as well as climb too. The ability to eat junk is really only useful if you're poor or trapped somewhere. It also prevents you from getting the Zombie or Vampire Mutation.