Sludge

A mixture of feces, urine, and semen; usually occurs when an individual ejaculates into the toilet after a piss-shit combo.

Don't look in the toilet, bro. I've got a heap of sludge sitting in there.

Third Lung

The act of putting a deflated balloon into another person's anus and then inhaling and exhaling into it. The balloon will inflate and deflate, like a lung.

My girlfriend had a hard time sitting after I gave her a third lung.