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An online variant of the P45 form (collected when a person leaves work permanently).

It is used when a person chooses to rescind their friend status with another person.

Alternatively, one may have their friend status rescinded because of behaviour which is deemed unacceptable.
Hey, pick up your E45 you are no longer my e-pal / friend / buddy.

Fuck you, I'm gonna collect my E45, I'm not gonna put up with you Sean.
E45 by roffle iron October 18, 2008
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a hard hand job lubricated with E45 moisturising lotion.
gimme a E45, gewww i got the hard time init.
E45 by Yon Yon August 22, 2009
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trucker's tan 

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I had a trucker's tan after driving for 10 straight hours on a sunny day.
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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.
According to the boffins downstairs, the murderer used a serrated blade.
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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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