Honestly I have done some stuff, not usually on purpose lol but deliberate? I had really nasty rancid gas one time.... And I had a dog that constantly would shove his nose right up your ass. Well in a cosmic coincidence he did his thing and I did mine... I think he about puked, watery nose gagged everything. That dog never did the nose in the ass thing again ever.
I still remember the whimper, and the look. lol I am going to hell for still laughing about it....
Edit: To add to this story, the dog so feared ass after that, if you even pointed your ass towards him he would growl at you.