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to con someone with being as shiesty as possible so that you make out not just the best and with the most to gain - but do it in a way that they have no idea what happened and think its a greatest thing since sliced matzah?(...ok bread)!
Lets get our JEWCON on and make some monies!

or

Dont you jewcon me - i see whats going on here...
Jewcon by Bonzo420 February 12, 2009
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Jewcon is an event for Nazis who like to burn Jews
Carl: “wanna go to jewcon”
Bob: “hell yeah, I’ve been practicing my cooking skills”
Related Words

jewdonym 

A pseudonym, stage name, or nom de plume meant to obscure one's Jewish heritage.
Jon Stewart: jewdonym of Jon Leibowitz
Natalie Portman: jewdonym of Natalie Hershlag
Jason Alexander: jewdonym of Jason Greenspan
Woody Allen: jewdonym of Allen Stewart Konigsberg
Paul Stanley: jewdonym of Stanley Eisen
jewdonym by QRDeNameland March 31, 2010
a nickmane for a jewish person named jordan.
better watch out, Jewdon might sue you.
jewdon by james9999222 June 22, 2008
The town of Newton Massachusetts. Has a lot of Jews. Is called Jewton.
Yo man, lets go to the new jewish deli in Jewton.
jewton by Urban Dictionary April 28, 2005
A jewish person with the name Jacob. He normally owes people money, but is very rich himself. The nickname "Jewcob" can also refure to a non jewish person with the name Jacob, but shows stereotypical jewish trates and owe people money.
Jewcob owes me £10 from when i brought him lunch.
My friend Jewcob is actually called jacob!
jewcob by Bob_The_Writer March 20, 2014

JewMonger 

1. A person who sells people of the Jewish faith.
2. Wow, look at that JewMonger stand on the corner!
JewMonger by Clarke... October 12, 2006
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British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
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Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
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Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
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korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
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