Yes

You don't stop, on the contrary, you move your ass even faster.

"Em...Emily" he says.

He doesn't know what to do, should he hold you or push you around, he just sits here paralyzed. But his dick isn't paralyzed, it's growing. Wow, it's pretty big, but your brother is inexperienced, so three more moves of your ass and you feel that his cock is twitching. You stand up immediately, so he can't even feel a full orgasm. He is almost jumping in his chair, not knowing what to do. You see a growing wet spot on his pants and you laugh. His face is red, you think that you see tears in his eyes.

"That'll teach you not to mess with me" you say "now, get to work." and you push him out of the room confident that you put him in his place.

So you are quite surprised when three hours later you hear a knock on the door and he enters your room.

"Oh, is it already done? Do I have the best grade?" you ask, looking at your phone.

"No. I want you to apologize."

"What?" you look at him annoyed.

"You behaved like a heartless bitch. I want you to apologize" he says stubbornly.

Is he serious? He basically asks for another punishment!