poop-fogged

Distraction caused by the imminent and urgent need to have a bowl movement aka, drop a deuce, pinch a loaf

Sorry honey I forgot to pick up bread, I was poop-fogged.

poop fog

The foggy brown water still remaining after you've flushed a massive poo.

Person 1: "you take a shit?"
Person 2: "nah dude"
Person 1: "bullshit there's obvious poop fog in the toilet"