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tap on glass 

To tap on the window of a car when you see the police. Done to give you the luck to not get caught. Originating in Parker, Colorado.
Tap on glass, save your ass.

pressed ham on glass

When an individual, or a group of individuals, press their naked buttocks against a window, preferably a restaurant or somewhere where there are many patrons to shock.
Did you see the faces of the diners at the coffee shop when they saw Joe's pressed ham on glass?

no eyes on glass 

No eyes on glass is a network monitoring term widely used in the operations world. It's origin is believed to have come out of one of the AT&T centers. Essentially, it means techs do not have to monitor crap. They can just be lazy and wait for a ticketing system to do all the work for them. But it really doesn't make any sense, because even though you aren't looking at the monitoring glass, you have to look at the ticketing glass.
In our monitoring center we have no eyes on glass.
no eyes on glass by Alejandro1 November 7, 2013

Titties on glass. 

Human female breasts pressed against glass in a visually appealing way.
Senator Mix-A-Lot has called for legislation to end the shortage of fly Yolandas throwin' they titties on glass.

glass on glass

A type of connection on a water pipe, or bong, that does not use anything to make a seal around it (ie rubber gromets, o-rings, tape, glue) but instead its a taperd hole, with a tapered stem. the connection occures in two spots, on the stem connnecting it to the pipe, and one from the stem to the bowl.
"O sweet that Bong has glass on glass!"
glass on glass by Sko56 May 10, 2006

eyes on glass 

It is when a particular software application or a hardware system requires continuous monitoring. Technicians take breaks and closely monitor traffic, tickets from field and possibly complicated consoles full of graphs and charts. Mostly done on a mission critical application or when a major event is happening on a otherwise unimportant application.

Also look at no eyes on glass for stopping monitoring of a critical application.
Microsoft put eyes on glass during the launch of Cortana.
eyes on glass by PoorBaby October 14, 2015
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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