My conversation with my 6 yr old tonight:
Melo - "Mom, what is inside the thing that hangs from under my pee pee that are two balls?"
Me - "Ummm your balls!"
Melo - "yeah, I know, but what's inside them? I want to know what it looks like inside"
Me - "Blood, so don't squeeze them!" (shows him a picture of muscles in the area)
Melo - "hmmmm okay, that makes sense!"