A motorboat, but in between the butt cheeks instead of the boobs.
Did you see Jack Pontoon Boat that stripper last night? He got his face right up in those butt cheeks.
by MooseMan5 September 17, 2010
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When a girl gives you a rim job, and then immediately after she starts making out with you. Later, you discover your own fecal matter on your upper lip, resembling a Hitler stache.
“Hey bro beans, you’re lookin an awful lot like Hitler right now. What’s that on your upper lip?” - concerned friend

*Rusty Pontoon victim frantically checks upper lip*

“Oh my god…. It tastes like poop” - Rusty Pontoon victim

“Didn’t you just come from your girls house? Did you give her a rim job or something?” - concerned friend

“No… she gave me a rim job. Why?” - Rusty Pontoon victim

“Please tell me that she didn’t start making out with you immediately after.” - concerned friend

“Yes she did.” - Rusty Pontoon victim

“Oh shit, you just got Pontooned, you got Rusty Pontooned.” - concerned friend who has seen this plenty of times
by Rodney McCumberpath May 19, 2023
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Similar to poontang but fat. If you wanna get some pontoone it means you want some fat pussy.

Derived from pontoone boats etc.
Big billy, Lets go to the trailer park and get us some good o'l pontoone.
by bobbt.cum March 14, 2003
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The coast guard was roundin up pontoon coons all day
by thediggler99 October 9, 2006
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A person with cod eyes. One eye sticking, one eye twisting.
That David Blunkett (MP) hasn't half got pontoon eyes.
by Bobby Wetfeather July 31, 2004
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The area in between pressed-inward breasts (see also: cleavage, the valley)) where one would insert their penis (referred to by some as a pontoon ) to engage in mammary intercourse (see also: titfuck)

Coined by SizeQueenSupreme
He stuffed a Jackson into the stripper's pontoon pocket, fervently dreaming of jammin' his wang in there.
by Sukebe- No Kotoba August 31, 2008
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