G-MILF 

an acroym for 'Grand Mother I'd Like to Fuck'

used superbly by skwisgaar skwigelf in
the first episode of metalocalypse.

stemming from the term MILF.

"guess what you are a G-MILF. that is a grand mother i would like to......"
-Skwisgaar Skwigelf

G-MILF by Eszt0r_bot January 28, 2008

G-milf 

Grandmother I'd love to fuck.

Sarah Palin is NOT a G-MILF.
Journey Johari IS a G-MILF.
Kim Kardashian is a MILF who will possibly be the hottest G-MILF of all time.

G-milf by KetchupWhisperer June 27, 2014

GMILF 

A Grandmother I would like to Fuck.

In Metalocalypse, Skwisgaar tells an old lady that she is a GMILF.

GMILF by Nathan Explosion January 23, 2007

GMILF 

An acronym for Grandma I'd Like To Fuck, most common with necrophiliacs.

"Man, she's such a GMILF. Get the shovel"

GMILF by Anonymous August 21, 2003

GMILF 

A Grandmother I'd Like To Fuck

That guys grandmother is a proper GMILF

GMILF by Mr Milkhead February 11, 2009

GMILF 

Grandmother I'd like to fuck and the daughter of GGMILF, the great grandmother I'd like to fuck.

My wife is a 57 year old GMILF and the grandmother of two but she looks 35 and gets hit on way too often. . .she's a dental hygienist!

GMILF by backstopbob May 22, 2006

gmilf 

Grand Ma I'd Like to Fuck.
A spin off word from the term MILF (Mom/Mother I'd Like to Fuck).

Although less common, a GMILF often is more exciting than a standard MILF.

Jenna and her mom are okay looking, but it's granny who's REALLY hot. She's such a GMILF.

gmilf by wpk914 February 14, 2010