Ok, could you help me settle a discussion with some friends?
Have a look at your left hand: which is longer - your ring finger, or your index finger?
Apparently a longer ring finger suggests higher exposure to testosterone in the womb, and there are various personality traits that go with this, including (apparently) predisposition to polyamory, being good at Maths, and being more likely to be gay or bisexual.
I’ll go: slightly longer ring finger, not interested in polyamory, crap at Maths, bi. Anyone else?