It was the tightest, heart shaped, ass that I had ever seen. Watching the muscles ripple as she walked away brought an instant stiffening. I figured i... probably would be better if I wasn’t home when my son got there. I was feeling kind of guilty for lusting after my son’s girlfriend. I went to a local restaurant/pub to get dinner and enjoy a beer or two. The image of Mona was in my head the entire night - and in my sleep. For the next two weeks the routine was the same. I’d come home from work. Something I really hated because it was such back wrenching and dirty work. I started off by finishing clearing the last of that years remains from the raised beds. Well it may have been cold and damp but chopping and digging out those stumps was damn hard work and in no time I was sweating like a pig. I went in to grab a drink and take a bit lo a breather and Dawn and her friends were in the living room along with a really hot little thing I hadn't meet yet. The others I'd meet before and. .so fucking good," I moaned as I began to get fucked harder.The guy in front of me held on to my back, as the guy behind me grabbed hold of my hips as I continued to hold on to the hand rail.I let go of the hand rail and grasped for a holding on the shoulders of the guy fucking me from in front.I hugged him as he and his buddy slid in and out of me. I began to climax, and I held on tighter to him, keeping my legs completely wide open as he held me tightly and fucked me with his friend grabbing. I turned my back on them, faced the doors. When the elevator started, I pushed my ass back, raising it against the big one’s crotch, then dropping it a little, raising, all in rhythm. He pushed on me a little and when the doors opened, I got out and he grabbed my ass as they left, looking over his shoulder at me as they all left, winking at me.The second trip, three friends got in, and I rushed over again. It was just those three big black guys and me. I don’t know why, but I got nervous, maybe.