got this from cracked.com.
this site is practically overflowing with awesomeness.

"The Legend:

"Dude, I can totally tell he's gay! Look at his fingers!"

This sounds like one of those playground urban myths that adolescent males use as an excuse to punch each other. Supposedly, comparing the size of your index and ring fingers can tell whether a guy is destined to one day make out with Sulu and Andy Dick in a poorly lit alley in Hollywood.

Yeah, right. Enough of your ignorant homophobia!

The Truth:

Incredibly, this is a real thing. It's called digit ratio theory and multiple studies have confirmed it.

Apparently if you have a longer ring finger, it means you got more testosterone as a fetus and are more likely to be hyperactive, aggressive and disgusted by anything featuring Hugh Grant.

A longer index finger, on the other hand, means more estrogen, making you more neurotic and sensitive. So if your index finger is way longer than your ring finger, you're like the gayest dude ever, right?

Actually, no. Studies found that it was when the two fingers were nearly the same length that the subjects were more likely to be gay (men and women both). Why? You'll have to ask the scientists, it's technical. What we do know is a study from Rutgers looking at finger lengths in lesbians even found a noticeable difference between the "butch" ladies who drive trucks and wear flannel and the more feminine lesbians who tend to populate your fantasies.

So... how far into this entry did you get before you stopped to look at your fingers?"