Acronym for "Grannies I'd like to fuck anally". It's a word used to design a well-conservated women over 60 years-
old. You'd like to fuck her anally, because:
1) you don't want her to become pregnant, even if there is
almost no chance because of her
age;
2) it may be the only orifice on her body tight enough to please you.
Holy Shit! Remerber the
Gilf of the other
day? Well guess what, she's pregnant
now. From now, I'm only hunting Gilfa's.