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not on your nellie 

a shortened version of "Nelly Duff". Nelly Duff = puff (breath) in Cockney rhyming slang. 'Not on your Nelly' is used to mean 'Not on your life'. "Breath" is synecdochical for "life"

See:
http://www.english-for-students.com/Cockney-Rhyming-Slang-N.html

Steve
There is no way you are going to get money out of me. Not on your nellie.
not on your nellie by SteveB47 March 25, 2009

Not on a wednesday 

A phrase used in the Aristocracy led by Lady Josephine, which refers to the awfulness of being mid-week. Often used as a phrase in which you express your dislike of anything mentioned, and how uncopeable it was.
Example: Girl 1: I just saw an orange woman with black hair wearing lime green.

Boy 2: Not on a wednesday!

Not on the hip

When one doesn't have something available or on hand for immediate use or distribution
Matt: Hey Jimmy, do you have that video of me dogging that chick from a few weeks ago? I'm trying to show my boys right now.

Jimmy: Nah, not on the hip sorry brotha

not on fire 

what no two people are
"No two people are not on fire. Aww..."
not on fire by moe October 10, 2004

not on speaking terms

(1) Individuals are "not on speaking terms" when a negative emotion (anger, jealousy, pride, etc.) eliminates the willingness to speak with another.

(2) This expression can also be applied to inanimate objects that are not working well together.
Didn't you hear? Michelle and Rachel are not on speaking terms. Rachel is pissed by what Michelle said earlier. I told Rachel she is better off confronting Michelle than bottling up her anger.

My 217 paint brush and I are not on speaking terms, Cecil! Go to the art store and pick up Versamanna brush. I will not look like an amateur in front of the Royal Painters Academy of Florence!

Not on the dime 

in referring to an illegal object, the awareness that theres currently no product in stock but absolution that it'll arive soon.
adam : yo, u got w8?
me : not on the dime my damie. wa da ta.
adam : speechless
Not on the dime by 727hoodins August 21, 2009
More from Urban Dictionary

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
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.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

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.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
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
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026
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