Bargain with him - a blowjob for a B

You turn your lips into your most seductive smile and drop to your knees in front of Mr Goodage, no doubt giving him a lovely view down your front.

"Let's just say that my mark is under negotiation," you tell him as you unzip his pants and pull out his semi-erect penis, gently stroking it in your warm hands.

"I'm sure something suitable can be arr..." you cut off your teacher as you suddenly plunge forward without warning and suck his dick into the back of your throat, almost taking his full seven inches in one swallow. Goodage's knees go weak and he leans back on the desk behind him as you pull off and start licking all over the throbbing head of his cock, tasting his pre-cum.

"I love the taste of your big cock," you purr, sliding your tongue down the underside of his hard shaft and sucking one of his testicles completely into your mouth. Up to this point his dick had only been poking out the fly of his trousers. Now, as you suck on his second testicle you undo his belt and drop his pants around his ankles.

You move your lips and tongue back up the length of his manhood then suck the head of his cock into your warm mouth. Your hands reach around and cup his flabby buttocks while you suck heavily on the pulsating helmet of his shaft.

"I want you to ram your cock right down my throat and fuck my face," you tell him, eager to get him off quick so you can get to your next class.

Mr Goodage hesitates a moment, "Ahhh, there's something I always wanted to do, can I fuck your tits instead?"