I quietly open the door just barely enough to slip inside, and just as softly close it behind me. From there I slip past the curtain that you lowered to block any stray outside light, and let my eyes adjust to the dimness on the other side.
After my eyes adjust more I see you over by your workstation. I know from past experience that you get so focused in your work you wouldn't have heard me come in, and with a grin I tiptoe over to silently stand directly behind you.
Eventually some sense must have told you someone was near; I see you stop mid-motion and tense up. "It's just me," I say and you relax at the sound of my voice. "Just the two of us in here," I whisper, stepping even closer and lightly touching the small of your back.
Even though you're facing away from me in the darkness, I imagine I hear the smile in your voice. "I take it you liked the itty bitty little pictures I emailed you earlier?"
I growl in the back of my throat and you laugh, but it turns into a girlish squeal as I grab you around the waist. I pull you away from your workspace and your lovely ass rubs up against me. "I'll take this as a yes," you tease as you feel my erection nudging you insistently through my pants.
"Thought it would be funny, did you?" I speak close to your ear, breath hot on your skin. "What if Bill had been with me when I opened your oh-so-innocently titled 'This Morning's Shots', hmm? Or worse, what if it had been Ms. Coventry?"
"Oooh.... can you imagine?" you titter. "The poor dear might very well have fainted dead away!"
A mental image of the mature woman's mortified face (bespeckled, with slightly greying hair in a impeccably neat bun) flashes through my brain as I join you in laughter.
I had come down to find you with a purpose though and I wasn't easily deterred. My hands renew their exploration of your body, and you sigh in lusty appreciation. "I did promise not to wear panties today," you purr sexily. "It's only fair that I should send you proof."
"Your 'proof' has been driving me crazy for hours!" I lean in close and nuzzle your neck, and breathe deeply of the unmistakable musky scent of your body. The near-subliminal pheromones released by of your arousal causes my own blood to pump faster, especially into one very rigid extremity.
"Awww poor Baby," you reply huskily as you feel my cock throbbing with fresh vigor. You take one of my hands in yours and slowly direct it down the front of your dress. "Whatever are we going to do about that?"
I let actions speak for me.