Passing Around Insults

My Wife, who was 8 months pregnant, and I were shopping in crowded mall. We had been trading humorous insults for most of the evening and I decided that I was going to really get her.

I announced in a loud voice that, "If you don't stop insulting me I'm not going to marry you!".

I was disappointed that only a few people around us reacted but my wife managed to bring down the house when she responded, "That's ok, I won't tell you who the father is!"