What does it mean if my boyfriend says he wants to regularly punish me?

The way he said it sounded so normal and like it’s something he’s said before to other girls maybe. He explained it as something he “ just enjoys “ and “ makes him happy ”.
I’ve looked it up online a bit and found it’s something that happens in other relationships. Does anyone else have a relationship like this? Why would he want this? HELP
What does it mean if my boyfriend says he wants to regularly punish me?
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