Some surveys have shown that we have to forget about the nose, the size of the feet and the race. The shape of the penis is given away by the thumb.

I was always thinking it has to be in some correlation with fingers… In fact I was sure and then I found this:

The shape of the thumb coincides with the shape of the penis. When we see a thumb that’s wide at the start and becomes evidently narrower towards the top, you can assume that the shape of the penis will be similar: the penis will end with a smaller head, while the body of the penis will be pretty wide in comparison. The head will be wide if the thumb gets wider towards the top. When you see a man with a long and fat thumb that becomes narrow at the top, you’ll find a fairly large and wide penis with a smaller head in his pants. If the shape of the thumb is narrow and is much wider on the top where the nail is, the head will be evidently wider than the rest of the penis. Men with beautiful and almost feminine thumbs also have penises that are shaped very nicely. When the fingers are a little crooked, don’t be surprised if his penis is slightly tilted as well. Those men who fold the part right by the nail slightly outwards have a penis that’s slightly folded or has a lot of veins.

Length

To assess the length of the penis, you must take the whole hand into consideration. But be careful. If the fingers are relatively long in comparison to the entire hand, that doesn’t mean that the length of the penis will reflect this. The length is determined only by the length of the thumb, which should be compared to the length of the other fingers in comparison to the hand. So, if you’re one of those people who put quantity next to quality, you’ll be able to find the man of your dreams already on the first date.

Width

You can predict the width of the penis in the same way. You should again consider the palm and the other fingers. The assessments of the width of a penis according to thumbs are always a hundred percent true, if you look closely enough. When you’re watching the width of the thumb, don’t look at it only from the middle, but all the way from the start of the finger to the top. We are of course talking about watching the outer side of the thumb and not the inner one, where you tilt the hand in such a way that you’re looking directly into the thumb. 

Enough of theory, now you can try what you’ve learned in practice as well

Source: Intimate Medicine