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on-cow-cow 

adj.
1.moronic,foolish,clumsy
2.not able to learn because of brian condition
Bush is an on-cow-cow fucka
on-cow-cow by sonx May 4, 2005

horns on a cow [horns on the cow] 

It is a slang term used in essex to mean when you make up a crazy mad, random spontaneous song lyrics with your mates friends.
girl 1: what did you do last night yesterday?

girl 2: I made up a horns on a cow horns on the cow with benji and bob

Get up on that cow! 

Go faster and get your stuff together
You’re going to slow it’s a highway, Get up on that cow!

Cow pissing on a flat rock 

A particularly hard rain storm. In other words, it's coming down so hard, it's as if a cow is pissing on a flat rock.
"Wow, look at them clouds rolling in."
"Yep, it's getting set to rain like a cow pissing on a flat rock!"

raining like a double-cunted cow pissing on a flat rock 

An archaic "hick" term for heavy rain or snow fall.
"Sheeeeeet! It sure is cumin' down out there! Raining like a double-cunted cow pissing on a flat rock!"
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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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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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"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
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korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
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