An acronym. G.irl I.'d L.ike to F.uck O.ne D.ay
Derived from seeing underage starlets dressing more and more provocatively. The genesis of the word came circa 2002 with then underage Lindsay Lohan and Hillary Duff.
Yo did you see that girl?
Dude, she's totally only 16.
Yeah man, but she's a huge gilfod.