Men are often accused of having a one-track mind. When filled with lust, it seems they simply cannot think of anything else.
Now scientists have found there really may be a direct relationship between the male brain and his private parts. They found evidence that males can create plenty of sperm, or lots of brain cells but not both.
As a result it seems, in bats at least, large testicles go together with tiny brains. A study published today looked at 334 different bat species to see if brain size was linked to reproductive organs.
Among many species of bats, females are highly promiscuous and when the researchers looked at the reproductive organs of these species, they found the males have evolved enormous testicles.
HAHA!