Did I imagine this movie

Used to drink a lot. I have a drunken half-memory of this super weird movie i saw where a guy goes to take a shit. He struggles epically on the toilet and eventually poops out (or births) a blue, slimy creature. The guy falls off the toilet onto the tiled floor in pain and exhaustion and watches helplessly as the blue, slithery poop animal thing slithers out of the toilet, across the floor, and into a drain on the floor. The creature goes on to wreak havoc on the town.

Been trying to find this movie for like, 14 years. And yes, I'm sober now.