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quack-my-ass clause 

Advice invariably found in the literature handed out by purveyors of so-called "alternative" or "complementary" medicine, in which customers intending to buy quackery are advised to check with their GPs first to find what "mainstream medicine" has to say.

The venomous diatribes against real medicine, and science and rationality in general, behind the closed doors of the "alternative" movement should tell you all you need to know about the sincerity of the quack-my-ass clause. On the face of it, it sounds obvious, egalitiarian and big-hearted. However, the real intention of the advice is to ensure that if anyone dies or is incapacitated by taking the quack's advice or products (or by swearing off real medicine, which may not be advised on the packaging but is a stock in trade in the "alternative" industry), if the matter comes to court the quack's lawyer can claim that the product or the service was misused; obviously, they didn't check with their GP, how unfortunate, it's not our fault.

Besides, the quack knows perfectly well their client is unlikely to see their GP or specialist about whatever the problem is, or if they do they won't pay much attention to their advice. If they did, they wouldn't be coming to the quack in the first place.
Ah, here's the booklet; 123 symptoms this product may be able to cure, 256 further lists of types of people the product may be able to help, 25 more natural products from the same factory that might be able to balance your energies and so on, and, oh yes, the quack-my-ass clause.
quack-my-ass clause by Fearman September 10, 2007
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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