When he grows up, will that fall off?

A few weeks ago we went to dinner at Rachel's house. We enjoyed a nice evening with our friends and a wonderful dinner...but the most entertaining part about the whole evening was Sawyer's question about Diego's "boy" parts.

I was changing Diego's diaper on the floor and Sawyer sat with me watching what I was doing. I actually tried to get her to change the diaper (jokingly) and she adamantly said NO. She doesn't like changing diapers, even though I tried to encourage her because she will have a new brother or sister soon. :) She won't even change her baby doll's diapers...so funny how disgusted she is. Anyway, I take off the diaper Diego is wearing and Sawyer's eyes get really big. She sits there for a second and then looks at me and says "What is that big thing on him?" I smile and look to her parents to answer this question and get nothing from them. The casually continue what they are doing...leaving me out to answer this question myself. So, I tell Sawyer, "Well, that's his penis and testicles." She says and points, "I think I have those down here." I chuckle a little and say, "No, honey you don't have those. Just boys have those." Rachel finally pipes up and says, "Sawyer, boys have penis' and girls have vagina's." Sawyer says, "Oh, when he grows up will that fall off and he will have a vagina, too?" All I could do was laugh, and then Diego peed all over himself and me! Sawyer says, "I'm outta here!"