The amount of testosterone a fetus is exposed to in the womb affects the ring finger to index finger ratio. The "2D:4D" ratio is well known. Longer ring to index finger, the greater the testosterone. It also correlates to uhm, well, shortcomings in other departments. Men tend to have a ratio less than one, woman, greater than one. Looking at the picture, he is probably 1.25. A woman born with the wrong parts.
My hands/fingers look like a bunch of bananas.
Someone said that once after I shook his hand. LOL