Manhattan Effect

An effect, usually on men, that pertains to girls in Manhattan where they become prettier and more attractive because of their location (the Manhattan borough). This can also pertain to their physical look, as it may have a particular style that cannot be found in any other parts of the world, but this also might be just because you found them in Manhattan.
I swear she's not that attractive, but somehow I like her

Probably just the Manhattan effect kicking in
by RubberShoes February 09, 2010
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Bambi Effect

When you have sexual intercourse so hard that your legs are shaking for 20 minutes post sex
"Bro, I sexed her up so hard I gave her The Bambi Effect"
by Abekoda Ochomo February 03, 2016
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Gaga Effect

The act when a songs acoustic verison is better than the original. The epicness that is achieved by few artist other than lady gaga
Have you heard Eva simmons silly boy acoustic verison? IT has the Gaga Effect
by mychael K. June 06, 2010
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cost-effective

effective due its cost, profitable, remunerative
Due to the R&D of the company, most of its products are cost-effective.
by amrdesigns March 30, 2008
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Undertale Effect

When a video game becomes popularly hated due to its fandom as opposed to the game itself. Part of cringe culture. Often results in a hatewagon.
"Let's play Fortnite!"
"Eugh, why Fortnite? That game sucks. The community is filled with whining kids."
"Didn't you have the same reaction to Undertale? It was a good game but the community ruined it? Isn't most Fortnite hate just another Undertale effect?"
by JTIG22 August 31, 2018
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Cheshire Effect

When a silly answer is actually the most logical.
"My joke in class had a Cheshire Effect."
by Holly_Uninformed April 07, 2009
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Vienna effect

Named after the "barely a food" item, the vienna sausage. Used to indicate something is good the first time you try it, but it progressingly gets worse and worse... usually after the second or third instance.
This food has the vienna effect, first bite is good, second bite is ok, third bite is eh.... And the rest after that are nasty.
by J February 08, 2004
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