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butt-dyno 

A device which implements a human being's rear-end to report a vehicle's performance in acceleration or engine power.
My butt-dyno says it's faster!
butt-dyno by Steve October 21, 2003
Related Words
Ann old bike brand, great when accompanied with black mags, that was bought out by GT.
Pedal down the foot hills
Wheelies on the front
P-p-pedal down the foot hills
Wheelies on the front
I'm on the dyno with the black mags
Black mags,
Dyno with the black mags, black mags
Black mags...
Dyno by wetdickallnight August 7, 2009
A Cleveland, Ohio colloquialism, DYNOMAN is a style of American football played when one kid throws the ball up and is pursued by every other player on the field.

In other communities it's known as "throw em up, buss em up" or "smear the queer"
"Man I bust my lip at woodhill park playing dynoman!"
dynoman by Champ Heaggans November 15, 2017
a rock climber's slang term for "dynamic" - a powerful move which involves jumping from one hand hold to another (when the distance between the holds is too great to reach), losing all four points of contact in the process.
you essentially fly through the air for a split second before grabbing the next hold.
"woah!! dude did you see that dyno?"

"yeah man that was crazy! he must have jumped 10 feet!"
dyno by climbing_freak1989 April 4, 2009

Dick Dynomite 

Some bomb assed dick, master stroker, dick that'll getchyoass sprung!
I couldn't front on ole dude...he gave me that gug-gud...that Dick Dynomite!
Dick Dynomite by rhenvar January 15, 2010
a machine used to measure the WHP (wheel hp) of a car across the cars entire range of gears.. also gives torque ratings
I just got my car dynoed after installing the intercooler, larger turbo and boost controller. I'm at 344 whp and roughly 300 ft/lb of torque
dyno by pseudonym April 20, 2004
More from Urban Dictionary
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

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
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