Do 6 year olds know what breasts are?

http://www.youtube.com/watch?v=lfJcX-RGoyY

Does Noah Cyrus know what breasts are? Because when Billy Ray and his son are discussing breasts, Noah gives them a weird look at 2:30-2:50 of the video?
Yeah When I was 6 years old I know what breasts were.He looks like he understood what they be saying in the video.I'm sure he knows by very soon he'll never have any.
Well Yeah,
they own an idea of what it is.

& why does it really matter?
6 year olds shouldn't be worried about breast anyway, they should be worried around learning their alphabets or something.
Yes they just dont enjoy any.
There is something wrong with you.
Answers:    If my three year old nephew know what they are, I'm sure a six year old would too.

Sometimes my nephew points to my chest and yells "boobies!" and then laughs.
Yeah they do.

Didn't you when you were 6?

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