When your partner is sitting on the toilet and you sit on their lap facing them. Then you urinate into their belly button while shitting through their legs, and the pee drips down into the toilet like a waterfall.
Darryl gave his wife the ol Cincinnati waterfall last night, she kinda liked it I guess.
verb: to shit oneself with diarrhea
YOOO, Ayham totally waterfalled on his sister.
Dude 1: oy the oppisite of Waterfall is Firefly.
Dude 2: yoooo thats crazy.
Dude 1: yooo i have to take a shit.
Dude 2: look out for cars.
A waterfall is a large body of water falling from a high place.
You: "Look! its a waterfall!"
Friend: "Wonder why its called that?"
You: "T H I N K"
Friend gets visibly upset
Friend: "Oh."
You: "PANCAKE."
Friend: "Fuck the English dictionary i'm going to the Pub"
I don't care what you say, in New Jersey WE DONT SAY AIRSIP omg we say waterfall you can't be my friend if you say 'airsip' like bro its a waterfall.
Hey bro can I have a waterfall?
It is a way of releasing toxins from your body via shitting such loose materials, known as diarrhea, at such a force it is like a waterfall
Wow, that health shot at whole foods had me waterfalling!
When your girl cums and she asks you to drink it up
Girl: oh my! I'm going to cum!
Boy: U aren't gunna make me waterfall again are you?
Girl: u bet I am