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
by Eszt0r_bot January 28, 2008
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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.
by KetchupWhisperer June 27, 2014
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