You walk into your office like every normal work day, nothing special, in fact if anything the traffic on the drive in has you rather tense and wishing to go home already. 

You sit down at your desk after hanging up your coat and pick up your phone to check your messages...right about half way through your first voice mail message from your boss you feel a soft touch along the back of your leg, slowly moving up your leg and moving around to the front of your thigh.  Surprised you almost drop the phone and pull back a little to look under your desk, you see me on my knees under your desk, I look up and you and put a finger to my lips "shhh". 

My hand starts to run up and down your inner thigh getting closer to your crotch with every stroke...slowly teasing you and making your cock get harder and harder with just the idea of my hand on you.  Finally, I run the tips of my fingers over the bulge in your pants, softly, teasingly, barely touching you.  At last my fingers wrap around your cock through the fabric of your pants, stroking you up and down, trying to make you as hard as you can possibly become.  I reach my other hand up and slowly pull down your zipper, reaching in and extracting your rigid cock from its restraints. 

You hear my sigh come from under the desk at the sight of your nice hard cock, I am not able to help myself as I lean forward and run my wet tongue up and down your cock, making your erection nice and lubricated. I wrap my hand around your cock and begin to pump up and down in rhythm, swirling my tongue over your head to taste the sweet drop of precum that has formed on your tip.  I place my lips over the head of your cock and start to gently suck at your head, trying to get more of your cum to taste.  I begin to work my mouth up and over your cock in time with my hand, moving more and more of your stiff member into my mouth until I move my hand away and am just moving up and down on your cock with my mouth.  At this point I hear a knock on your office door (which has been open this whole time while you were pretending to check your voice mails).  Your boss wants to talk with you for a minute, walks in and closes the door.  You reach under and place your hand on top of my head to still my movements, to which I move your hand away and begin to work you faster and faster with my mouth....I hear you trying to make a rational conversation with your boss regarding your recent project and feel your body trying to hold in its orgasm so as not to give away what I am doing under your desk.  Finally he walks out of your office and you ask him to close the door behind him, you have a few calls to make and dont want to be disturbed.  The minute the door closes I feel your cock swell in my mouth and your cum begins to shoot down my throat, releasing a sweet tasting string of goo into my mouth.