While extra credit is always appealing, I've been studying for this.  As long as I get a fair score, and some consideration for what I've already put up with, I should be fine.  "Give it here," I respond flatly, leaning my elbow on his desk.  With a smirk, he plops it in my hand, which sags a little under the weight.  It's not small, and the batteries inside don't help.  On closer inspection, it's pretty nice; something I might have picked up myself if I were in the market.  But back to business.<br/><br/>Leaning back in my little chair, I hook my big heels against his desk, giving him a good look as I spread my lips.  Since the vibrator is dry, I lick up the shaft and suck it a bit, giving it a pretty good blowjob to get us each warmed up.  When it's slick, I bring it back between my legs, pressing the tip inside to get a feel for it.  Thankfully it's not so flat and wide as a ream of papers, so the head actually pops in despite its girth, making me gasp a little.  God that felt good.  Can't let him know, however, no matter how many points he says he'll give me.  With the head in, I have to stretch open a little more for the widening shaft, and the ridges make a pleasant sensation as they each slide past my lips.  I almost pull it back out to do it again, but realizing I've closed my eyes in pleasure, I get on with it, sliding almost all of the big cock inside, just an inch sticking out.<br/><br/>I bring my feet back down to the floor, sitting as demurely as I can with an inch of vibrator sticking out between my legs.  "Can I take the test now?" I try to ask in exasperation, but it's a little breathless.