Mammary intercourse

Mammary intercourse is when someone rubs their private parts (like their penis or vagina) between someone else's breasts. It's like a special kind of hug or kiss that grown-ups can do, but it's not something kids need to worry about. It's important to remember that it's only okay to do this kind of thing with someone who agrees to it and that it should never hurt or make anyone uncomfortable. It's also important to remember that this kind of activity doesn't usually make babies, so grown-ups who want to have babies usually need to do something different called "sex."