This is a bit complicated so bear with me.
When someone gets pregnant, at a certain point they’ll be able to produce milk. Nipples are usually closed off until this happens right? How does the nipple open up to allow milk through? Does the hole close up eventually or is it just permanently open with no milk to go through? Why isn’t the nipple open all the time?
In: Biology
I feel like you are imagining nipples as having a little door that opens. Like a cap pops off or something. They just have a bunch of pores. You can look at your own nipples and see that. You can see it even if you are a boy!
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