While finishing up my final semester in college, I took a weekend job as a security guard in a small office building.

I spent most of my 4 p.m.-to-midnight shift studying or looking at porn between floor checks. Last Saturday was a porn night. It was near the end of my shift and I was reading a Penthouse letter about a bellhop licking some MILF’s toes. I was thinking how kinky that sounded when a woman who looked to be in her late thirties strode through the front door. She continued walking through the lobby as if she owned it, flashed her ID at me while saying, “Marcia, accounting, sixth floor,” and headed for the elevator.

It happened so quickly that it took me several seconds to realize that she hadn’t signed in. As the elevator doors closed, the guy from the next shift walked in. I told him what had happened as I grabbed the sign-in sheet and gave chase. I rode up to the sixth floor and the elevator doors opened. It was quiet, except for the sound of deep moans and soft murmuring. I crept along the carpeted floor past the unlit offices, toward an open area with several desks. Marcia was seated at one, her skirt pushed up around her waist, her feet propped on the edge of the desk, and her hand steadily moving a dildo back and forth between her legs. It was a scene out of a porno flick, but it was the image on her computer monitor that had me popping wood. There was a totally naked girl in bed, also fucking herself with a big fat dildo. Webcams — I love them. My ex-girlfriend and I used to do the same thing when she first went away to college. I moved even closer.

“That’s it, baby, fuck yourself for me,” Marcia crooned.

I unzipped my fly and palmed my cock. Both Marcia and the girl on the screen picked up the pace, and so did I, stroking my cock as frantically as the girl on the computer while hoping my grunts and groans wouldn’t be heard over their moans and cries.

Just a few seconds more and I would have spilled my seed all over my hand, but the girl on the screen suddenly stopped. Marcia kept going till she came, but her girlfriend made direct eye contact with me and smiled. I froze.

“Marcia, I think you have company,” she said. Marcia, still breathing hard from her orgasm, turned her head and looked at me. “You,” she said, without the least bit of surprise or embarrassment. “What the hell took you so long?”

She zeroed in on my cock and told me to come over to her. The girl on the screen started moving the dildo slowly in and out again as she watched. When I was close enough to Marcia, she gave me her dildo and told me to lick it clean, and I did as she said. Then she told me to get on my knees and eat her pussy. I did. Her cunt was already sopping wet from the workout she’d been giving herself. I lapped up her juices and flicked my tongue against her clit. Then I fucked her with my fingers as I sucked hard on her button. She came, grinding her cunt against my face with her fingers clenched in my hair.

“That was nice, but now I want you to fuck me,” she said. “And make it good, because Lauren is watching and I want her to get off, too.”

No worries there. I gave her a few shallow thrusts to start. I knew she wanted more by the way she was gripping my ass, trying to pull me in deeper, but I held back at first, just because I could.

Then I heard Lauren say, “Come on, fuck her! She likes it hard and deep!” I felt Marcia’s nails digging into my ass and I fucked her as if the end of days were upon us. Lauren was moaning and egging me on, and my jizz suddenly erupted out as Marcia’s cunt muscles tightened around my dick. Marcia shoved me away and I came all over her pussy.

I hooked up with Marcia and Lauren a couple more times at the office, but that was as far as things went. Still, it was fun while it lasted.