Hearing his respectable wife talk like that was too much for Alan and he thrust deep and hard alongside me and ejaculated violently inside Sue. The feel of her cunt changed immediately and my cock was bathed in lovely warm baby batter. Alan stayed inside for a few more thrusts and then withdrew slowly, leaving me still inside. I knew what I wanted - I asked Sue if we could change position, I wanted her on her back, her legs spread wide and knees bent so that I could examine her cum-filled cunt. Alan placed a pillow under her bum and I used my fingers to scoop the cum dribbling out of her and push it back into her cunt. With her legs wide apart and her cunt glistening with pussy-goo and Alan's semen, the smell of sex was gorgeous.
She was begging me to re-enter her and I knelt between her open thighs and stroked my swollen helmet up and down over her open gash, using my cock to scoop Alan's cum back into his wife's cunt. This turned us all on so much and I was getting close to cumming so I slid deep into her without warning and gave her a good hard pounding. Her cunt was so sloppy, I looked down as I slid in and out and enjoyed seeing my cock glistening with Alan's semen. By now the need to cum had subsided a bit and after a few deep thrusts I was able to pull out and offer my cock to Alan to suck. We'd already discussed it and they were both eager for him to do some cleaning himself.
The sight of her hubby sucking my cock and my groans of pleasure were all too much for Sue and she begged me to re-enter her and fuck her doggy style, her favorite. "Tim, I want you to give me a good hard fucking and fill me with cum please" are the words she used - how could I refuse? She was making such a noise that Alan filled his wife's mouth with his cock to keep her quiet. The sight of me fucking his wife hard had got him erect again and we proceeded to give Sue a vigorous spit-roasting.
With her now knelt on the bed the inevitable happened and gravity meant that Alan's cum started to run out of her cunt all over my balls. The feel of her sloppy cunt, the smell of sex, the sound of my wet balls slapping against her was all too much. Alan was spurring me on with verbal encouragement and telling me to fuck the dirty bitch hard and splatter her insides with semen. He told me how they both loved her being filled with another man's cum. The dirty talk and the sound of all three of us in the throes of pleasure combined to tip me over the edge, I held Sue's hips tightly and emptied my balls deep inside her. God, she felt lovely, her cunt in spasm and squeezing every last drop of cum from me. Alan by now had withdrawn his cock from Sue's mouth and was wanking over her face. She was using filthy language, this otherwise respectable middle-aged grandmother begging me to dump cum deep into her cunt. Alan too was using dirty talk and really getting off on it, telling Sue what a dirty little whore she was to have another man's cum inside her and what a filthy bitch she had been to have two cocks inside her at once. He asked her to imagine what her colleagues at school would think if they knew what she liked doing in the privacy of her bedroom and what a little cum-slut she was. They clearly both loved this sort of talk and Alan soon unloaded again, this time all over Sue's face.
We spent the rest of our time together cleaning each other, snowballing, swapping cum and stories and slowly winding down from an amazing sex-high. I've not seen them since as it's quite difficult to organise.