Thong. Dates back to 2004. When a group of girls go to buy a thong as a joke, they refer to it as "Taking the Plunge".
"I'm wearing my pink Plunge today."
by Curly October 08, 2004
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A vigorous form of oral sex, where the female lays on her back with her head tilted back, while the male straddles her face and plunges his cock deeply into her throat.
I was plunging that chick so hard she threw up on my cock.
by Corey Ray Slackinstein September 27, 2010
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(pluhn-jing)

Inserting your penis, dildo, strap-on, fist, ect. inside someone's butt while they are pooping to push the poop back up their ass.
The man put his penis inside the girl's ass right as the poop started to come out, causing the poop to go back in her ass and causing them both to have a not so pleasant feeling but the great feeling of knowing that you accomplished it.

-he is plunging her, he is plunging her, she plunged herself-

(hint: it would make your life easier if you didn't tell people that you plunged someone)
by epg2 November 11, 2011
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Plunging is where a person cant cum so they change things up in an effort to reach an orgasm. To start plunging you need to be using both hands in a up and down movment such as uncloging a toilet.
Guy 1: Hey I got bored in science class so I just started wacking to Mrs.*******.
Guy 2: How did it go? shes like 300 pounds!
Guy 1: I know I kept trying to forget that but no use.
Guy 2: All that work for nothing.....
Guy 1: Nope not for nothing I caught my self at a mental roadblock of how i was gonna climaz so i just started plunging to just change things up and lets just say the clog left and certainliquides flew out smoothly.......
by *Colt* August 01, 2010
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Phallic-looking ride at north Idaho's Silverwood theme park that locals refer to by many other impolite names.
Silverwood's Panic Plunge gives locals much to snicker about.
by Disgruntled Idahoan August 04, 2007
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When you dip your fingers in ice then pull them out to put it right into a vagina
people about to have sex
Girl: babe want to go swimming in pussy?
Guy: hey lemme jump in!
Girl:Nah baby do the Polar Plunge!!
Guy: ALRIGHT!!
by JIIZZIINGFROG October 21, 2018
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