Babies with huge heeeds are an unfortunate fact of human biology.
The gestation period of nine months is the optimum settled upon by natural selection for a balance of survivability outside the womb and a head small enough that it won't kill the mother during birth.

Big brains (and heads big enough to fit them in) were such an evolutionary benefit that the rest of human physiology had to play catch-up.

Word from the wise:
After having a child, women tend to be uninterested in sex (all their attention, mentally and physically is directed at the new arrival). Therefore, it doesn't matter about the 'Mersey Tunnel' syndrome, because new fathers tend to go 'a while' in-between "festivities" (as I like to call it), and need little in the way of, erm, stimulation.
You get the idea.
(theremin put the lotion in the basket on, Sat 27 Feb 2010, 10:34, Reply)