A long long time ago.....in paradise....
Adam was returning home late one night in paradise after drinking with the dodo and the unicorn. Eve got angry and yelled at him: "YOU ARE SEEING ANOTHER WOMAN!"
Adam responded: "Don't be silly, you are the only woman on earth" and went to sleep.
Later that night Adam woke up, feeling a tickle in his chest and saw it was Eve. "What are you doing?" he asked.
"I'm counting your ribs" she responded.