They jiggled slightly just from her turning and her nipples were so hard and big that I could see the little bumps standing out on them, even through the heavy material of the sweater.

As she turned around again to resume her talk I started walking toward them to go into the computer room, my penis stiffening as I walked. I had to kind of squeeze behind Lisa to get by. I looked down and her butt mounds were bulging out so far that I couldn't even see the floor. The sight was too much for me and as I went by, without caring if I got caught, I pushed my free hand up under the mini-skirt and squeezed one buttock, even forcing my thumb a little way into the crack. The tights gave way as her ripe butt flesh squished between my fingers and the place where my thumb pushed the nylon into her crack felt hot and slippery. I gave her cheek one more squeeze and moved on quickly, sweating a little at what I had just gotten away with. How could anything so wrong feel so right!

Lisa must have sensed that I was right behind her because, luckily for me, she didn't even move when I felt her. She could have screamed or jumped or turned me in to the others, but she just went on talking to Daphne like nothing had happened.

Needless to say, I was very relieved. "The little bitch probably thought she was doing an old man a big favor by giving me that feel", I thought. But it was sure worth the risk and I was hard as a rock as I went into the other room. I sure didn't feel like working on some machine, but what else could I do. Besides, I wanted to stick around as long as possible and maybe get another grab later on.

I was still carrying Lisa's ass grease on my thumb as I entered the other room, my body heat keeping it just as warm and oily as when it was inside her. I began to picture her walking by me, those full, jiggling cheeks slipping and sliding against each other, lubricated by the stuff in the crack and I could barely stand it. I bent my nose down to my thumb and sniffed. To my surprise it didn't smell bad at all; kind of musky and perfumed.