geaster 

A perfectly rolled, usually large, marijuana cigarette.

Yo dude, pass me that geaster.

Homeboy, spark up another geaster!

geaster by The Random Hero April 13, 2007

Bruton Gaster 

From the USA Network TV Series Psych. Burton "Gus" Guster's name spelled incorrectly by a museum

And you must be Bruton Gaster.
Burton. Guster. It is Burton Guster.

Bruton Gaster by smoshme July 17, 2011

Gaster 

Nightmare fuel

I know he isn't that scary, but Gaster's been haunting my nightmares since 2015.

Gaster by HotHotLegg April 11, 2020

gaster 

It's a secret!
But no seriously, Gaster is a secret character from the game UNDERTALE. Said to be Sans and Papyrus' dad. Well, it's not confirmed, but he may be. He speaks in WingDings too.

Undertale Fan: I FOUND THE SECRET GASTER!!!

gaster by SkyBerry June 5, 2016

Gasterflasted 

Confused or unsure

I'm gasterflasted of whats going on .

Michael Jackson didn't understand he could not touch kids. HE WAS GASTERFLASTED!

Gasterflasted by sadboisparkz May 27, 2021

gaster blaster

Sans' guns pew pew pew pew pew pew pew

Sans: I'm gonna freaking kill you.
Frisk: But saaans...
Sans: WITH A GASTER BLASTER!!!
Frisk: ded

gaster blaster by chara the human :) May 22, 2017

geester 

Gangsta from the East - usually from Hong Kong or any part near South China Sea. Is usually very rich by inheritance and is often seen hangin out in various parts of China Town of a city. Also owns a lot of real estate and is seldom seen without sunglasses. He is always surrounded by wannabe geesters.

Don't mess with YoPhang, he's a bad geester!

geester by sgandhi September 9, 2008