Noun - The act of getting a blowjob and the girl/guy throws up on your dick.
Verb - To give someone a chunky waterfall (see above)
"Hey Trent, I'm so hungover right now. Don't make me blow you or I might give you a chunky waterfall."
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The act of urinating in female's Anus. This is a term that can be commonly used to replace the saying, "I'd pee in her butt", if a female is, in fact, attractive.
I would give that girl a SanFrancisco Waterfall.
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The act of eating her out while she is upside down until she squirts.
Bob and Cindy upward waterfall last night.
A constant flow of rainwater caused by overflowing spouting and/or guttering.
most commonly seen in schools and blocked gutters.
-"What a skody school"
-"I know their such a beautiful freak of nature"
-"what are?"
-"urban waterfalls"
Chundering up large amounts of Stella Artois (a Belgian beer), to give the impression of a waterfall
"Ahhhhh mate, Jake has had way too much Stella, look at that Belgian Waterfall
When you piss on a girl's face or mouth and your piss is clear
Shit got so freaky last night I gave her a diamond waterfall and soaked the bed. She looked like a thousand dollars after that.
When a mentally ill man who is in a hospital/psych ward, urinates all over a nurse who is attempting to help him.
Primarily attempted and seen within the Midwest region of the United States of America.
We got a code 205, a patient is attempting a Midwest Waterfall in the ER. Security backup required.