Why not, the more you please him the better your grade

"Okay big boy, come and get me," you purr as you take off your blouse and bra, then lie back on the floor.

Mr Goodage straddles your torso and moves to your chest, letting his heavy erection drop in the deep valley between your breasts. He reaches down and pinches both your nipples, twisting and pulling on them briefly before his hands squeeze the ample flesh of your tits.

"Oh wow," he gasps as he presses your boobs together around the shaft of his cock, forming a tight sheath. With another moan he begins to pump his hips, sliding his cock back and forwards between your tits, his precum providing the lubrication.

You lean forward and flick the tip of his cock with your tongue everytime it pokes through the top of your cleavage. Your teacher is tightly squeezing your big tits, his cum covered cock rapidly humping your bosom.

"Yes!" he yells suddenly, his body stiffening as his dick shoots between your breasts, his hands clutching painfully tight down on your tits. Spurt after spurt shoots up from his cock, splattering against the underside of your chin and coating your mouth, neck and chest with his seed.

He releases his tight grip on your breasts once he had milked the last of his cum from his cock. He then reaches out and lifts your head, pushing his slightly softened cock between your lips for you to clean. You suck hungrily, your tongue swiping all over his cock as he pressed his length into your mouth and you lick him clean.

"I think you'll be happy with your mark my dear," he says as he stands up and passes you a towel to clean off all his cum.

Well done, time for the next class now then.