gelf 

a word that can be used in place of any word that you can ever think of, usually this would be a curse or bad word. Used to create funny sentences.

"You are a flipping gelf"
" I heard you gelfed that girl last night"
"OMG i just gelfed in my pants"
"My girlfriend dumped me, what a gelf"

gelf by Matt Thoggy August 21, 2007

GELF 

Genetically Engineered Life Form. Gelfs are all that remain of humanity after we render ourselves extinct in the far future, but we leave cultures of mix-matched animals on terraformed planets. Created by Rob Grant and Doug Naylor in the TV show and books of Red Dwarf.

Lister: We've got to shake it. What's over there?
Kryten: Gelf Space.
Lister: It'll never follow us in there.
Rimmer: No because Glefs are untrustworthy dangerous savages, it would be insane.

GELF by Wingy December 28, 2005

gelf 

a mythical elven creature which follows you around and is essentially a part of you

sometimes I just want to kill my gelf

I love to play with my gelf

gelf by Kouji March 2, 2008

gelf 

Guy Everybody Likes Friend. Commonly used by drunken party-goers on the London Underground.

Due to his friendly nature, that one definitely looks like a gelf.

gelf by Gordan Brown October 28, 2009

Gelf 

A Gay Elf

You are such a Gelf

Gelf by Chobits December 24, 2019

gelf 

an efeminate short guy

Nathan Lane is a gelf

gelf by Johnny A April 21, 2003

gelf 

a girlfriend (see the example below).

Oh my gawd. His gelf is a crack whore.

gelf by Johnni December 17, 2006