When one has to use the toilet and has extremely liquified diarrhea, to the point where all the liquid shit flows out of ones anus, as a waterfall. This action usually occurs after one has had particularly bad Mexican food, or just eats very unhealthily
Person 1: “how was your day, bro?”
Person 2: “ awful. It was going pretty good, but when I went to take a shit, I had a Mexican waterfall instead! I haven’t been able to walk normally all day after that!”
a poop whistle is when you excrete wind and its high pitch. Wetness in the anal region may confirm the completion of poopwhistle.
Dude i goota go wipe up, i just let out a poopwhistle.