She can

"Now my unruly student..." Mary twists Harvey's cock

"Aaah!" He screams as tears start to appear around his eyes.

"You will lick my cunt. Until I cum exactly ten times." She spread her ass over her face letting him see her nice wet shaven pussy.

"And if I don't like how you do it. Well then...." She starts to twist his cock, "You are in a rude awakening."

She sits on his face and says, "I don't feel your tongue against my pussy!"

She twists his cock harder with her nails making Harvey to start licking.

"Aah that's better. Now a little to the left." She twists his cock again, "There..shit! That's it."