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Pedosaurus Rex

A Pedophile of near unreachable levels of pedophilia who like to stalk his or her prey in school changing rooms and playgrounds. They are solitary creatures who hunt alone and seek out unsuspecting children of the neighbourhood.
(A little girl walks alone through a park)
Man 1: Hey look at that little girl, she looks so sweet and innocent
Man 2: Yeah i kno.....HOLY SHIT A PEDOSAURUS REX!!! RUN LITTLE GIRL, RUN!!!!!!!!!!
Pedosaurus Rex by jimmytwinkletoes October 7, 2010

pregosaurus 

A female of small build, like a bird, but large belly due to infiltration of male seed. Often walks with a waddle late in her term. Easily agitated with the ability to acquire a wide spectrum of moods in a short period of time.
The only creature more dangerous than the T-REX was the pregosaurus.
pregosaurus by okcmatt April 17, 2011

pandasaurus 

The pandasaurus is usually a peaceful creature, but when disturbed, it turns into a ferocious dinosaur like monster. It's main diet consists of large amounts of bamboo, but can really digest about anything. The pandasaurus look like any normal panda but is three times larger and has longer claws on their paws. During their life, the pandasaurus mostly sleeps and eat, and rarely spend their time to reproduce. Because of this, there are few of them left on Earth. If you ever encounter one, do not piss them off or else they will eat you. The plural of pandasaurus is pandasauri. If you want to learn more about the pandasaurus thumbs up.
You: Hey look mom they finally have a panda at the zoo.

Your mom: No, dumbass, it's a pandasaurus.

You: Oh...can we get cotton candy at the zoo.
pandasaurus by Average asain December 4, 2010

pedosaurus 

pedophiles over the age of 50
Bob Barker would be a pedosaurus.
pedosaurus by DelEdwardo February 25, 2015

Plebosaurus-Rex 

These carnivorous creatures lack friends, and make themselves look really good because they also lack self-esteem. These creatures know that they are Plebs and thus they don't change. They feed on the penises of teachers, being massive arse-kissers. If they get detentions then their lives are over, then contemplate suicide.

Some Plebosaurus-Rexes do commit suicide and even the family members will dance on their overly-wide graves. Life is better this way as scientists like Steven Hawking know their threat on the popularity of others while P-Rexes are in a close proximity. Steven, and millions of others like me, want P-Rexes to be extinct from the planet as they are a large danger to humanity.
Chris: Lol, I just owned him on facebook! Look how popular I am, Imaginary Friend!
Spencer: Don't be a Plebosaurus-Rex, Chris!

Chris: Oh no! A detention! Why!! My life is RUINED!! I'm always licking Mr. Lavender's arse!
Lewis: You're such a Plebosaurus-Rex.
Plebosaurus-Rex by LemonyStuff February 23, 2011

Pregosaurus Rex 

A pregnant woman who acts as if she is the first person to ever be pregnant. Quick to anger and quick to tears.
I'm going to work late rather than go home and face the wrath of Pregosaurus Rex.
More from Urban Dictionary
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

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
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