A girl who jumps on every guys dick she knows under water like in a pool, their for she is a whore or slag that enjoys many partners UNDER WATER. Dam Kangaroos.
That dam underwater kangaroo knows just about everyone
by wutwut631 November 8, 2009
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A fancy way of calling a stay at home mom giving her child a bath.
Fred - "Hey Sarah, sorry my wife can't talk on the phone right now. She's busy with her new job as a Underwater Hygienist."
Sarah - "I thought she was staying home raising the new baby?"
Fred - "She is. She's giving the baby a bath right now"
Sarah - " you're an ass, haha"
by Mr.Ection December 13, 2022
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A euphemism for cunnilingus, eating pussy; also referred to as "going down," or "diving under the labial waves." In certain, traditionally conservative communities, this activity is frowned upon and reference is frequently found on signs near lakes and rivers announcing "underwater swimming is prohibited." In recent years, a fad similar to planking has emerged among college-age youth, whereby photographs are taken of couples engaged in "underwater swimming" with the signs stating the prohibition of such activity appearing in the background; this has come to be known as "stanking."
Shawna's bulging little camel toe was more than I could take, so I pushed her back onto the hood of the car and ripped her panties off. Then I took her underwater swimming until we were both drenched and well satisfied.

Everett really surprised me and totally proved the myth isn't true. After we made out for a while, he went underwater swimming and didn't come up until my toes curled!
by W. Wolfe October 18, 2012
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A sexual term meaning to unexpectedly tickle someone's genitals while in the pool or spa.
Did you hear about that chick giving Manny an underwater massage?
by MartiniMic April 6, 2011
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A group of social outcasts. They are avid weeaboos to a level that is unhealthy and cringy. They can't communicate like normal functioning adults and resort to weeb talk and anime related memes instead. They will hold irrational grudges against you even if you didn't personally wrong them, since they value social justice ad absurdum. They have no social life nor social skills, and therfore value online interaction more than real life. They value the feelings of online friends more than their real life friends. They are low life individuals that will never achieve anything meaningful in life and define their sole existence by the animes they watch and the mangas they read. They are still virgin, and will most likely lose their virginity to their perverted bisexual best friend whom may or may not be attracted to underage looking girls. They are the punching bag of society and will stay that for the rest of their lives.
I used to be a part of the underwater squad, but then I got woke and got a life.
by BrexitVoter20IQ November 8, 2018
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