A little boy, curious about the nature of things, asks his Mommy where babies come from.

"Well, honey", the Mom answers.." sometimes when Mommies and Daddies are together, the Daddie's penis goes inside Mommie's vagina, and.."

"What happens then, Mommy?" replies the little boy.

"Well...about nine months later", the Mom explains, "Mommy can have a baby". 

"Oh, OK", says the little boy.  "Mommy?"

-"What sweetie?"

-"Last night I had to get up to go to the bathroom to pee, and I hope you don't get angry with me, but I think I saw Daddy put his penis in your mouth.  What do you get after that, Mommy?"

-"Jewelry, sweetie".

Gene