What is Fool's Gold?
1.
Going down on a girl with hopes of reciprocation, when instead she says she is going to the bathroom and never comes back.
"Oh man, I was pretty sure a bj was in the cards with Jenny but it ended up being Fool's Gold."
"I put in my time but all I got was Fool's Gold."
See
2.
Urinating in your partner's asshole (can be done post-anal sex or just for kicks)
"I gave Charlene a wicked Fool's Gold last night, right after I blasted her ass."
See
3.
a man dressed up as a woman,(used as an adjective to thwart a horny unknowing male from hitting on a cross-dressing male)
Man 1:"Yo that bitch over there be flyyyy"
Man 2:"Yo brutha, slow your roll...that shit is some fool's gold over there."
4.
A Forum Run by Aaron.
FG's server is running as slow as shit AS USUAL.