Jack: "Ella, you have a vagina and I have a penis."
Jack: "Mom, do girls have vaginas?"
Me: "Yes, that's right."
Jack: "and I have a penis...a HAPpenis penis! Yay! A HAPPINESS PENIS!"
he then breaks into song:
"I have a HAPPENIS PENIS! I HAVE A HAPPENIS PENIS!"
And Ella joins in;
"he has a HAPPINESS PENIS! HE HAS A HAPPINESS PENIS!"
You have a happy day too.