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.
When a dude finishes in his hand and immediately slaps his load across the side of the girls head into her hair. Thus giving the visualization of a beautiful frozen waterfall.
Joe was so proud of the frozen waterfall he just gave Susan, that he invited his buddies in to check it out.
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
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"
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.