Boy Terror: "Mummy, your tummy looks fat."
Me: "Ummm.... thanks? I guess it looks fat because it is fat."
Boy Terror: ... still staring at my tummy... no, wait, that's NOT what he's staring at! He's checking out my boob!
Me: That's not my tummy, bud. That's my boobie!"
Boy Terror: "Oh! Boobie!! Hee hee!"
Silence for a few beats, and then,
Boy Terror: "Boobie is a funny word."
*** pause while we all think that over***
Boy Terror: (almost under his breath) "Boobie. Hee hee!"