Did they measure how times each monkey got to "use" their testicles ? You can have smaller stuff and a lower sperm count, but if your seed is spread at twice the rate of the others, your bloodline will still wins.

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2009 Kia Sedona
2009 Honda Odyssey EX-L
12006 Jetta Pumpe Duse
(insert Mercedes here)

Husband, Father, sometimes friend =)