What my 5- and 7-year old daughters call breasts. They witnessed their little twin brothers breastfeed, and therefore have no doubt as to the function of mammary glands on a human.
Mommy, look -- my dolly is having some of my milkies. (her shirt is up and the doll is "nursing.")
This is not "sick" -- it is a healthy thing that the daughters are learning what to do when they have a baby.
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