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!”
The act of ejaculating into one's eyes in goal of blinding and subdoinng cet party and furthermore shoving them down a flight of stairs during process.
"hey guys, did you see mike give mary a mexican waterfall?," "Yeah barry, she's dead!"
A depraved scatalogical act for three people. After eating several bowls of chilli and drinking tequilla the protagonist stands naked on a chair and deficates into the mouth of the first partner who is kneeling beneath the chair. This person allows the faeces to overflow and fall down into the mouth of the second partner who is lying on their back on the floor.
"How was your recent trip to Mexico?"
"It was great, I met these two dudes and gave them a Mexican Waterfall!"
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.