The "Poon" is known as a Womans Vagina as we know, so a "poon lagoon" is a Womans Bathroom.
Hey Sarah sorry i took so long in the poon lagoon.

or

Dood that chick droped a duce in the poon lagoon
by Joe Gadow January 13, 2006
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A place with lots of beautiful women.
Dude, this place is filled with hotties. It's like a poon lagoon!

I was just swimming in that poon lagoon.

There is a bevy of beautiful women here; it's a poon lagoon if you will.
by Special 'K' March 1, 2008
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I couldn't go down on her because she had a mass case of Lagoon Poon
by Bohndo March 14, 2015
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Comparable to swamp ass, Lagoon Poon's potent force can instantly soften even the sturdiest of boners . Most common symptoms and signs of "lagoon poon" are a puffy irritation and vast swelling of vagina lips. When encountering hookers with wet, sticky pubic curls; chances are, she suffers from lagoon poon. The collection of pussy sweat often creates a twat slime similar to the texture of infant diarrhea and is often mistaken for grandmas famous meat loaf. Lagoon Poon is a category five cunt funk condition, and although many slam pigs can't help it, they sure can tame it with a simple baby wipe.
Jamarcus: "Bruh, look like dat bitch threw up in her lap my nigga. Slime be dripping through dem yoga pants my nigga"

Denzel: " True my nigga, dat sweaty box be a sure case of Lagoon Poon my nigga"
by dirtyernie92 July 18, 2014
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To sweat excessively in your nether region. Swamp Ass for female lady parts. (Male version: Niagara Balls)
Ryan: I am sweating my balls off.
Elyse: Yea I am really dealing with a poon lagoon.
by PJ Cooler March 9, 2022
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