Penis

Long story short my son was about 3 and found out that his best pall Breanna was a girl and girls dont have a penis. That was the reason she sat to go pee-pee. We were out fishing at a lake. Well he was so hurt and I explained that ALL women dont have a penis instead we have what we have. Well he thought on it a minute and asked the above.
"Well can we just go and buy her a penis mom?"