An incredibly tiring drill for the sport of water polo, in which at no time does a player stop moving in the water (hence the name: perpetual motion). Perpetual Motion, though tiring, can be quite fun if there are a large amount of players. However, without enough people, the players tend to be too exhausted to enjoy themselves, even if getting an extreme workout. At first, Perpetual Motion, also called "Perpet." (per-petch), is a confusing drill to learn, with players swimming all around to different parts of the pool and polo balls being thrown at both nets. Once the drill is learned, it is easy enough to follow though.

Person: Hey! Want to hang out?
Water Polo Player: I'm too tired, I'm gonna go sleep. We did perpetual motion for half of polo practice today.
by elessi11 July 14, 2008
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Its someone who no matter how hard they try to get laid the are a perpetual virgin
Chad:"look at that perpetual virgin"
Chad2:"wow he will never get laid"
by theultimatechad May 24, 2018
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PT, also read as "prior taxpayer" or "permanent tourist".

Someone who travels from nation in such a way that he isn't considered resident in any of the nations he visits. This way, he doesn't have to pay income tax.
PT's often have their official residency in some sort of tax haven.

Also see Nomad Capitalist
Me: Why aren't you paying any taxes here, Jeff?
Jeff: Because I'm a perpetual traveler and not a resident of this country. Besides, taxes are theft.
Jeff takes a huge puff of smoke on his cigar and blows it in my face.
by agorist January 18, 2014
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where everything that can go wrong does and leaves you feeling cray cray, EXTREMELY CRAY CRAY
Ray:Hey man!! how was he festival last night? Did ye meet up with yer one?

Jamal: nah man she perpetually mindfuked me!!! i didnt know what to do!!
by Ray Sweenzy April 3, 2010
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During 69 he suddenly shoves his cock deep down her throat causing her to both gag and vomit on his dick and fart into his face - in response he gags and vomits between her leg.

Eternal motion.... if it's more than a fart.
Hotel housekeeping refused to clean the sheets after the guests performed Perpetual Motion
by Jennon the navigator November 3, 2016
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When 2 people both like each other, but are too awkward to ask each other out.
They were both too cripplingly shy to ask each other out, but still had feelings for each other, and therefore were stuck in perpetual friendzone
by Eternal Lonliness June 23, 2017
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