Gravity

M and I were taking a bath together this morning and I notice her looking at my chest.

"Mom, why do your boobs hang down like that?" (JUST what one wants hear about first thing in the morning).

"Gravity", I say.

"OH, so if there wasn't any gravity, your boobies would be floating up touching your shoulders?"

Should I be impressed that a six year old understands the concept of gravity (she's a genius!) or be annoyed that she thinks my boobs are long and stretchy enough to touch my shoulders!