For centuries, men and women have argued over which is more painful:

Giving birth or being kicked in the bollocks

So how can we reach an answer? Lets put it this way:

A year after a couple's first child, a woman will often turn to her other half and say, "Let's have another baby."

But on the other hand......I challenge you to find a man who, one year on, will turn to his mate and say,

"Tell you what John... do you fancy kicking me in the bollocks again."