You laugh, but these are some of the longest-lasting relationships we've ever had.
The problem is, you never know if they guy in the next stall died or not. You could end up just sitting there waiting for a moment of release that will never ever come. Not until you join him in the great emptiness beyond this world.
That's why this restroom line of thinking is a dangerous game. It's much more efficient and honest to just slide a note under your stall that reads, "We're both human, with waste to expel. I'm not going to judge you for the sounds and odors you're about to release. Please show me the same courtesy." You should also attach a printed out, on-the can selfie just to give it a personal touch.