GP stands for "General Principal"

Usually preceeded by the word "On"
Why did you sleep with my ex girlfriend? I thought you were my best friend! Even though technically she was single, I should fuck you up just on GP
by jay blkman September 12, 2003
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GP stands for "General Principal"
In GP, Principal should be spelled: Principle
We retired school principals object to this abuse...

Usually preceeded by the word "On"
The word is spelled: preceded

I invite jay blkman, (Sep 12, 2003) to correct his entry. Thanks.
On GP, principals are known to have lofty principles.
by Dorvaldude July 16, 2005
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GP is a word used by roller-coaster enthusiasts, and simply means General Public (as in what non-enthusiasts would say/do).

The word is also used as a gatekeeping measure by some enthusiasts from letting their passions be flooded with non-enthusiasts.

NOTE: People in videos tend to say 'general public'.
1) Nemesis, at Alton Towers, is a ride not just popular with enthusiasts, but with the GP as well.

2) If you don't know what GP means, you're GP.
by Zylx2 September 19, 2017
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location: grosse pointe, michigan. rich burb outside of detroit where you can find people poppin' collars, literally. lakeshore drive, expensive cars, yacht clubs, golf courses, mansions, art van, edsel ford, the fuckin mafia. place where the movie "grosse pointe blank" was actually suppose to be filmed at. green grass, spoiled kids, soccer moms, more divorced parents than anywhere i can think of. extremely high land value and 1 high school on each end where a kid can actually wear a pink polo shirt with khakis without getting his ass beat.
"look bill, another outsider getting stopped by 10 gp cops"

"looks about right"

"god i love wearing this sweater around my neck"
by Old Money April 13, 2006
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A GP ("Good Party") is one that is characterized by an abundance of alcohol and attractive or interesting characters. There should be an equal number of males and females at said good party. In terms of alcohol, a wide variety of spirits and/or beer creates the impression that one is extremely cool and a connoisseur of liqueurs. PIctures should be taken at a GP with many people and large amounts of Solo Cups. Competitive beer pong, kegs, home bars, and dancing are a few examples of things that can be found at a GP. A GP must also be GFP (good for pics).
"Hey Matthew, the frat house is throwing a party tomorrow night. I hear they're getting a keg. GP!!!!"

"This techno music is bumpin'. What a GP"

"I'm so hungover from the GP last night, I think my liver might fail."
by Cat Baker January 22, 2009
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(in forums)

Grandparent - the posting above the one you're replying to. Occasionally seen with multiple Gs for greater depth - i.e. GGP for great-grandparent, GGGP, for great-great-grandparent, etc.
I agree with the GP in saying that voting machines should be more secure.
by pacpacpacpac November 6, 2009
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A GP is a glass pipe used when smoking crystal meth. It is a straight tube with a bulb at the end with a hole on it.
Quit holding the damn lighter so close to the GP, your burnin up the bowl.
by IcE_SmOkeR December 14, 2009
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