He had big balls

[vetran]

Second to fourth digit ratio: a predictor of adult testicular volume - Oh - 2014 - Andrology - Wiley Online Library

It has been suggested that second to fourth digit ratio (digit ratio) may correlate with male reproductive system function or disorders. This hypothesis is based on finding that the Hox genes control finger development and differentiation of the genital bud during embryogenesis. Thus, we investigated the association between digit ratio and adult testicular volume.
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Before determining testicular volume, the lengths of the second and fourth digits of the right hand were measured by a single investigator using a digital vernier calliper. Using orchidometry, the testes were measured by an experienced urologist who had no information about the patient's digit ratio.
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This means that men with a higher digit ratio may be more likely to have smaller testis compared to those with a lower digit ratio.

so to summarize if your ring finger is longer than your index fingers you are packing basketballs.

[OwlHoot]

So by that reasoning the Madagascan aye-aye should have balls the size of Jupiter's moons

[Dactylion]

So by that reasoning the Madagascan aye-aye should have balls the size of Jupiter's moons

It’s has a creepy long middle finger.

OK I know it was just for comedy purposes but really??? FAIL - Please try harder!

[xoggoth]

so to summarize if your ring finger is longer than your index fingers you are packing basketballs

I seem to be an exception to that rule, darn it.

[vetran]

So by that reasoning the Madagascan aye-aye should have balls the size of Jupiter's moons

no just a very happy girlfriend.