Best defined by a special reporter from the group Fairness in Media, as reported on The Onion: "An ancient cabal of powerful weather fanatics operating outside any government." They are also known as the Cloud Elders.
Snow in June? Must be the work of the Knights Doppler.
by MallowTheCloud February 3, 2009
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An IB Music class where you spend more time playing Internet games than you do learning about actual Music history that will be on the IB test. Often taken by lazy band dropouts, the average IB Not Doppler student will use this class as time to sleep, do other homework, watch movies, talk, or do just about anything not related to IB Music. Sadly, every student in IB Not Doppler will definitely fail the IB test... but hey, we have a whole other year to learn this right? Well, time to play Flight.
Teacher: "I've got a hangover. Get out the Macbooks and compose or something. Except for my HL's... whoever they are."
Student 1: "Time to porn surf."
Student 2: "I love IB Not Doppler."

Student 1: "Ugh, I have so much homework in IB Psych!"
Student 2: "I know what you mean. In IB Not Doppler I have to turn on my computer AND play Achievement Unlocked tonight. FML."
Student 1: "....."
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The blast of horrid stink or the entrancing and mysterious smell that accompanies someone as they walk or run past. This is the russian roullette of smells and is normally unavoidable in close social spaces unless one gets really good at holding one's breath just to avoid how smelly that sweaty yoga instructor must've been.
John: Sweet weepin' Jeebus, Karla needs a serious power-washing today. She walked by me near the copier and the doppler smell was so rank it stripped years from my life!
by Owen Kneaux December 1, 2011
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The annoying situation of trying to shit in a public lavatory which suddenly becomes busy with people. Effort is made to shit as quietly as possible but failure to do so leads to a loud embarassing splash which is clearly heard by all. So named after the "Doppler effect", whereby a moving object emanating sound, changes pitch as it's distance to the subject listening increases/decreases.
(1) Man(upon rejoining his wife): Honey, I'm so embarassed - do you think they're all looking at me 'cos they know it was me that Doppler shitted?

(2) Hey, I think that's the guy that laid that Doppler shit we heard earlier. Noisy fucker couldn't control it - shoulda put down some paper first.
by sixxon June 18, 2007
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The boner that the weatherman gets from interrupting your regularly schedule television schedule to show you Doppler Radar Images of trailer parks being relocated.
Travis: Damn it! Channel 4 just cut away from the A-TEAM rerun to show that Trailer Park in Lake Arrowhead getting blown to bits on Doppler.

Barclay: No wonder that weatherman has a raging Doppler Boner...
by McDoh! June 28, 2009
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Essentially this is the opposite of bukakke. The man is surrounded by many women, while blowing his load in a circular motion like the line in a doppler radar screen.
Dude I totally pulled a doppler radar on these chicks last night, they had no idea what was comming.
by pedrOOOO May 12, 2009
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Is when the male partner's balls repeatedly smack against the female partner's vagina while perfoming anal sex.
Martha really likes the double doppler effect when I am doing her up the butt.
by Frances Wates June 19, 2006
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