My sub is usually well behaved, but every now and then, when they feel like I'm being too nice to them, they like to act a little bratty to get on my nerves, they would defy me, and call me subby names, which I, of course, don't like to be called by them, they do this so I'll get angry and punish them, even tho they don't like the punishments

So I guess my question is... How could I deal with them wanting to be punished... I feel like the fact that it is wanted ruins the whole point of a punishment, so I cannot even correct this behavior because, or course, punishing them for it would give them what they want... So, paradox

I've talk to them about confusing punishment with funishment, which I very clearly do differently, and they say is not the case

Any thoughts? I appreciate any comments you can give me