She makes sure you cum

After a few times the punk shifts things up, leaving you bent backwards into her with your ass a few inches off the base, so she can thrust from below with decent **** and still have a hand free. With this free hand she covers your mouth so your lewd sounds don’t disturb the class, and she can keep using you to her heart’s content. By the time she whispers 20 in your ear you reach the edge, cumming thick ropes again and again all over the desk and her paperwork.

“Ohhh I knew you wouldn’t last long, but don’t worry, I’m far from done!” She turns your head so she can messily lick the side of your face as she keeps going, now somehow even faster and harder. Your eyes are rolling in the back of your head, and the only thing stoping your incoherent screams is her muffling hand keeping the wad of your used panties in your mouth. By the time she finally cums you’ve lost track of your surroundings, too overwhelmed by the intense fucking.

She chuckles deeply in your ear “aww I think I broke my new toy” while she finally releases her hold, letting you collapse back on her still fully impaired. “Tell me if you don’t wanna be my personal cocksleeve for the day?” You mumble an incoherent gagged response, causing the punk to smile with “that’s what I thought! But my my, I should customize my cocksleeve to my tastes...”

You are too out of it to notice her pull a knife and cut away your clothing, or to see her put her backpack on the desk to pull things out, all without letting you off her cock.