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Combination of the words great and rocks. Is meant to denote something so exciting/awe-inspiring that not just one of those above words will suffice.
"Dude, you finally got an internet connection in your room?"

"Yeah, it fucking grocks!"
grocks by Scarecrow March 24, 2005
Another word for groceries
Go get the grocks! I'm just buying grocks
Grocks by Pepepepepepepoppopopo July 12, 2023

grockers 

When the king bangs on the wall and the Grockmonster comes out with his green coat and bockers.
He’s in his grockers
grockers by Park Dean October 2, 2023
Tourist - annoying visitor, who disrupts the lives of residents.
One theory on the origin of this wordis from the name of the famous Swiss clown, Grock, famous in the 60's. A resident of Torquay was said to have remarked that visitors resembled grockles, little Grocks, because of their boorishness and clownish behaviour.
The word in fact originated from a strip cartoon in the children's comic Dandy entitled 'Danny and his Grockle'. (The grockle was a magical dragon-like creature.) A local man had used the term as a nickname for a small elderly lady who was in Torquay one season. The term then became generalized as a term for summer visitors.
The term became popularized because of its use by the characters in the film The System (1962), which is set in the Devon resort of Torquay during the tourist season.
"Bloody Grockles and their caravans, always jamming up the Devon lanes!"

"The seagulls are a real problem because all the grockles feed 'em chips all summer."
grockle by Rich Pharo July 1, 2005

Grockle Tub 

A grockle tub is a derogatory term for a cruise liner.
That Grockle Tub has over 4000 passengers.
Grockle Tub by Lord Richards December 8, 2017
understand,appreciate actively and profoundly, fully comprehend; also, to think about, listen to, play, or contemplate something or someone with full love and understanding, even ecstacy. Often done stoned.
(s)he spent the whole museum visit just grocking one painting. I go to the park to grock the trees. MCEscher really grocked Goedel's theorem.
grock by guy May 10, 2003
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
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