toxic waste dump

A bowel movement that stinks to high heaven, leaves streaks on the toilet porcelain, and in many cases, induces tears in anyone who comes near it. Anyone who comes in contact with it feels like it's an environmental disaster. Often the consistency of a chocolate soft serve ice cream.

Dan: What the fuck just happened in the shitter - it stinks like Love Canal?!? Wes - what did you do?
Wes: (sheeplishly grinning) I just took a toxic waste dump. Soary.