I mowed the lawn today, and after doing so I sat down and had a cold beer.
The day was really quite beautiful, and the drink facilitated some deep thinking.
My wife walked by and asked me what I was doing, and I said 'nothing'.

The reason I said 'nothing' instead of saying 'just thinking' is because she then would have asked 'about what?'
At that point, I would have had to explain that men are deep thinkers about various topics, which would lead to other questions.

Finally, I pondered an age-old question:
Is giving birth more painful than getting kicked in the nuts?
Women always maintain that giving birth is way more painful than a guy getting kicked in the nuts, but how could they "know"?

Well, after another beer, and some heavier deductive thinking, I have come up with an answer to that question.

Getting kicked in the nuts is more painful than having a baby, and even though I obviously couldn't really "know", here is the reason for my conclusion.
A year or so after giving birth, a woman will often say, "It might be nice to have another child."
On the other hand, you never hear a guy say, "You know, I think I would like another kick in the nuts."

I rest my case. Time for another beer, and then maybe a nap in that hammock