It was just a flash of movement. I really didn’t have time to react, to respond. I had my hand wrapped around my cock and I was just about to climax when the movement at the door drew my attention and then the flash of dirty-blonde hair and the smell of perfume overwhelmed me. Before my dizzy mind caught up with my racing heart I felt the soft warmth of her mouth swallowing my heavy cock. And my fingers instinctively tangled in her hair while I closed my eyes and her tongue press against my cock when her mouth tightened.

My body convulsed before I actually came. I tightened my stomach and squeezed the muscles in my arm as I grabbed her hair, gently pressing her down. My hips moved off the chair and I squeezed my ass. Then the tension suddenly released and I began to shake. My cock exploded and I felt her hand replace her mouth jacking me until I had nothing left and I collapsed back into my chair, breathing heavy. Nan had once again showed me that she was the very best at giving a blowjob. She knew just how to use her tongue, her mouth, and her hand with her mouth. She put the exact right pressure on the soft spot under the tip of my cock and held my balls when I came. Nobody ever matched her ability, and I had plenty of blowjobs from other women during my life. But Nan was, by far, the very best.

Nan left me alone so we could both…recover. I was thankful she had! I quickly shut down the program that contained all the security camera footage and pulled up a porn to create an alibi for why I had been masturbating in my office. Knowing that my Nan had spent about a half hour fucking her dildo earlier that afternoon and, at least I assumed, fantasizing about Kyle the whole time, I decided to test her.

“How did the meeting with Kyle go?” I asked when she came back into the office, face washed and her lips swollen, pouting.

Her face flashed fear then quickly resolved to seriousness. “He just had a few questions. He was here for like two minutes!” She added that last statement so quickly that I could tell she was trying to avoid any further questioning. It seemed an obvious attempt to prove there was no reason for me to be concerned about how long he might have stayed.

“Jeezus that’s a wicked mark on your knee!” I said trying to keep her mind on what Kyle and she did that afternoon. I knew that she had melted into him as he carried her to the couch. I knew that his hand was on her thigh and that there was this…moment.

“Oh, that…” she said reaching down and running her fingertips along the bruising red line. “I caught my knee on the door, of all things.” There was no uncomfortable giggle and I was certain that she wanted to say more, but she didn’t. She just rubbed the mark and her eyes went far away. I tried to give her enough time, enough space to think about whether she wanted to confess her desire for Kyle to me. We were swingers, after all. Communication about our desires for others was a basic requirement in order for our relationship to remain strong. I don’t know why she couldn’t just tell me she wanted to fuck him. But the moment passed and her eyes came back to mine. She smiled. Deviously.

She sat on the edge of my desk and placed one leg on the outside of each of my legs. Her lower jaw squared and she tilted her head to the side. Here eyes chided me, teased me. I knew that look. She didn’t have to say a word. I leaned forward and kissed her thigh. She shivered and moaned softly. Her fingers teased the back of my head. My hands climbed the outside of her thighs and ran underneath her denim skirt. My lips sucked and hovered as worked my way up her thigh. Nan moaned when my tongue darted at the soft skin on her inner thigh. She spread her legs and sat back on the desk. I moved from my chair and raised her legs using my shoulders. As moved my lips under her skirt, I realized she had gone without panties, and I realized: she had changed out of her shorts!  Having no panties and a skirt made me wonder if she’d fucked some random before coming home to me.

Nan rarely went without panties unless she was horny. Based on what I had seen that afternoon I knew damn well she was in one of those states of mind. Though I had to assume she’d never go out and fuck a stranger without me, I couldn’t help but pull up the image of the last time she wore that same skirt with no panties and we went to an over-30 dance club. Nan, as always, got noticed. But that night she lured a young guy, in his twenties, to the corner booth where she told him she wasn’t wearing panties and he slid his hand under her skirt. The young man’s cock immediately pressed through his pants and Nan dutifully returned his grope. I settled the bar tab while they went out to our GMC Yukon parked in the darkest corner of the parking lot alongside a row of trees. By the time I got there Nan’s skirt had already been thrown over her hips and the young stud’s cock was slamming inside her while she bent forward pressing her hands against our truck. Nan gave me head until she was moaning too hard to do more. She came so hard that the young guy couldn’t hold back any longer. He groaned while finishing on my wife’s gorgeous ass.

Because of this I had to wonder if she had been so tuned up this afternoon that maybe she decided to just hook up with one of our swinger friends. I rejected the idea and concentrated on the salty tartness of her pussy. I sucked her in my mouth and rolled my tongue along the edges before diving deep inside. Nan barked an “oh shit!” and grabbed the edge of the desk. I decided not to let go. I decided to make her come as quickly as she had made me cum just moments before. So my tongue slapped at her clit with her pussy inside my mouth. I grabbed her arms and I could feel them tighten. I looked up and saw her head tipped back. She started rocking her hips against my face. The flood came just before her body shook. I glanced up as Nan’s face suddenly appeared, flipping her head forward, eyes squeezed shut, mouth agape, and her eyebrows furrowed. Nan moaned and her body shook until the rage inside subsided. Her face relaxed and a relieved smile stretched across her face.