Three guys are walking down a beach. One of them trips on a bottle. They pick it up and a genie pops out. "I'm a powerful genie, I'll grant each one of you a wish!"
The guys think for a while, and the first one goes: "I want to be two times as smart as I am right now!" Genie says "okay" and the guy's smarter.
The second guy goes: "I want to be 3 times as smart as I am right now!" Genie agrees and the guy becomes smarter.
The third guy thinks for a while, then he says: "I don't care about 2 or 3, I want to be FIVE times as smart as I am right now!" Genie looks at him, frowns a bit, and says: "Are you sure about this?" The guy goes, "Yeah, that's my wish"
Genie: "Are you really sure that's what you want?" Guy: "Yeah, yeah, cut the talk, just grant the wish." Genie: "Okay."
And the guy became a woman.