geijer 

(Pronounced: Gay-er)
a hairy metrosexual bearing a strong resemblance to a wookie or an ewok, but who typically wears a D&G suit to work after having his nails done with his boys.

You're not a fag, u're Geijer!

geijer by littleking69 July 6, 2010

geiter 

Describes someone who needs a sugar daddy to survive.

BoyA- what's a geiter?
Boy2- never heard of a "geiter" before.

geiter by Funnyyyy February 26, 2017

geigernaut 

An unstoppable juggernaut.

The geigernaut mowed down the tank single handedly.

geigernaut by Teocarlo Pulgar September 3, 2003

Geiger 

Verb - To aggressively punch a female in the face

Dude 1: "Yo dude Dan got kicked out of the club last night!"
Dude 2: "What did he do?"
Dude 1: "He socked some chick in the face!"
Dude 2: "Dude he totally Geigered her!"

Geiger by Ya dude man August 1, 2008

geizer 

Beautiful, talented Russian porn star.

Geizer is a porn phenomenon

geizer by LAFITE March 19, 2016

Icelandic geiser 

The grand dick of some Icelandic person.
"In Iceland we call that Icelandic Geiser"

"Oh that's a big dick"
"In Iceland we call that Icelandic Geiser"

Icelandic geiser by Kasmie December 5, 2014

Gadsden Geiser

When a guy inserts his penis into a vagina and pisses. While the female simultaneously urinates. Hence, causing a massive vaginal geiser of urine.

Man, can you believe that Sarah let my brother Allen give her a Gadsden Geiser. It was so messy, his bed looked like a swimming pool.

Gadsden Geiser by Smitty bros January 3, 2020