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Ballast is a friendly reference to; a mate, sidekick, wife, bitch, girlfriend, boyfriend, trick, pal, etc. but especially the person who rides shotgun with them in their car.
Used by Eddie Haskel to describe Lumpy in an episode of "Leave It To Beaver".
The Cisco Kid had Pancho for ballast, Tarzan had Cheeta.
ballast by Jim Inman August 25, 2006
A derogatory name given to a person who is withholding a comment/skill/resource in order to purposefully change the atmosphere in which he is residing by then revealing the sandbagged item.
A person who is a Ballast is one who pretends to have no Snickers when asked, but really does and is just waiting to lower the general mood of his surroundings with the no, then appear bring the mood that much higher when the hidden Snickers have been revealed.
Ballast by Crafty Madhes November 17, 2010
An term of enderment for your girlfriend/wife etc
Ive got a night out away from the ballast.
ballast by Stuartgt-four May 31, 2005
The least attractive female in a group of females. Normally, female friends/aquaintances like to attach ballast to their group to make themselves look better.
Tom: Hey Rob check out that group of hotties over there by the bar.

Rob: Yeah but the one with the huge funbags is so ballast.

Tom: I'd still do her though, wouldn't you?

Rob: In a heartbeat
ballast by Kevin Mooney October 5, 2006

Ballast McGee 

1. a term for a person who is dirty and stupid. often the same as whitetrash, but any race can be trash

2. the practice of taking someone else's work or ideas and passing them off as one's own.

3. something worthless; garbage; nonsense.

4. Shabby, dirty, and vulgar, often the word is associated with prostitutes

5. something you think is gross or offensive. repulsive behavior."opposed or contrary, as in nature or character."
Ballast McGee is a repugnant, sleazy, travesty of a human being.
Ballast McGee by Jango519 March 14, 2018

Ballast tanks 

When your balls expand from absorbing too much water from sitting in the bath too long.
I was taking a bath, and I mustve dozed off, because when I looked down, I had ballast tanks.
Ballast tanks by Bojojo June 16, 2011
More from Urban Dictionary
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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