Privacy where art thou?

I used to ask at what point should you no longer be undressed near your young children, now I know the answer. When no matter how many Dove commercials you watch your body image is being damaged by your three year old.
(of course I am kinda exaggerating, but not entirely)
Yesterday while dressing with lightning speed due to tardiness wonderful little G exclaimed loudly "I don't like your underwear! (pointing) and what is that called?"
I reply "a bra"
G: "I don't like your bra!"
(at this point I am thinking Good to know but lets move on.)
G proceeds: "what are those called again?"
me, slightly exasperated:"breasts"
G:"I don't like your breasts either!"

This was followed later after I decided since my husband was home for the day I would lounge in a mid-day bath (complete and utter luxury) as I stepped gingerly into the hot suds the door swag wide and in waltzed G who gave me a once over look and exclaims loudly "YOU DON'T HAVE A PENIS?"
I reply to this previously asked question of course with a "no girls don't have penises."
hoping the conversation could come to an end and I could return to solitude and hot water.
but no, before leaving he drops this statement..."Mommy you have a BIG bum!"
the thoughts I endured during my no longer luxurious bath:

...it looks big due to proximity,
...in relation to some it isn't really all that big,
...it wasn't so big before I had you!

So now all I need to know is where is the closest home depot I need bathroom door locks! Go ahead boys bathe in whip cream or shave the cat (sorry Konnar your on your own) mommy needs a little privacy!