I’ve seen the way you look at him when he has his shirt off.”“Well, yeah, he’s buff. And hot. And Diana says he’s got a big cock.”I was cu...ious. “You two talk about that? What did you tell her about me?” I asked.“I told her the truth – that you have a big cock, too, and that you know how to use it.” It wasn’t entirely true – I didn’t have a huge cock, though it was bigger than average. I had measured it a few times while erect and determined it was about 7 inches. I wondered how big Mark’s was.. Then he rammed all the way in. He had his hands at the side of her butt, but decided to lean forward far enough for his hands to reach her breasts. They felt so nice as he massaged them and tweaked her nipples. He straighten back up to clasp her butt as he started back and forth movements. He didn’t want to rush, but he didn’t want Joan to be too bored waiting for him to cum. He fucked her as long as he dared, then speeded up to shoot several spurts in her. Joan wiggled her butt to make it feel. She squealed with joy ag the large black dog sprang forward, pinning her to the ground beneath him.She got her legs outside of the animal's legs and pressed her wet pussy up against his crotch. He humped downward, and she could feel strings of pre-cum dribbling across her pussymound."Oh, God, what a turn-on!" she whimpered. She rammed her drooling cunt up against his humping cock. She wrapped her arms around the dog's back and her legs around his furry loins.Dee felt his black dog-cock nudging. She already had her PC running and an office disc that needed loading on, she sat on her swivel chair at her desk and I stood next to her and could see that she was not waring anything under her shirt as I could clearly see her little bee stings and as she turned her head towards me it was obvious that she saw my erection under my flimsy shorts and I saw her smile as she turned her head back to the screen.I asked her if everything else was running ok and she said that it was so I suggested that.