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.