Coolie is
American slang for
butt or
ass. I’ve heard it a lot. It’s used as short for a slang Spanish and Italian term, spelled "culo", "coolie", "koolie" or "cooley". Well Italian/Spanish but I’ve heard many English use it too.
There’s someone
outside my building honking at another vehicle, the
guy being honked at said “honk again and you’re gonna see my coolie”
lol