Yeah, it does

It's hard to believe what you can get used you or even start liking. Two weeks ago you were screaming after receiving a few slaps and now you can take long paddling sessions, being hit with bastinado, walking with nipple ring for a long time without any problems. It's even more, you not only can take it, but your suffering arouse you. You have best orgasms when you masturbate and at the same time you rip clothespins off your body, or when your brother is fucking you while pulling your nipples. It's sick, but it seems that you succeeded in making yourself a painslut or at least soomething close.

Your brother realized that you began to enjoy his treatment and he loves mocking you for it. He also tries to get creative with his "punishments", he loves to beat your pussy, or to take your ass without giving you any time to prepare.

"Yeah, bitch" he says while fucking you and with hot wax dripping on your body, causing painful and pleasurable sensation to you "tomorrow you'll get your grade. And after that you'll move out. And then we won't have to be careful anymore, I'll hurt you as much as I want. Isn't it awesome?"

"It is, sir" you answer and you don't even have to force yourself to moan.

Of course you don't plan to do that. You were really obedient to him during last weeks, taking whatever he wanted you to take. But it will soon end.