1) A completely
worthless person, object or thing that is of equal or less worth than an indeterminate amount of
faecal matter.
2) An
informant or undercover operative; a snitch.
3) Any quantity of excrement, human or animal.
1) "
You're such a piece of shit, Prime Minister."
2) "I know I'm no piece of shit, and I'm pretty sure
you're OK, and I'm fucking positive you're on the level."
3) "
Oh, great. A piece of shit on my best crocs."