I had another similar experience, but this time with a much older couple, the guy being in his early sixties and his wife in her late fifties.
His problem was no boner on account of medication that he was on, so he figured he'd get a stand-in cock to do his fucking for him. First met Vern and Debbie at a motel at Parakai, big indoor hot pool and all that, we sat around and talked for a bit, Vern explained his motives while Debbie was stroking my leg under the water... His plan was for me to meet up with them every month, give Debbie a good seeing to and that would be it.
They were fairly well off, had a big campervan that they cruised around in regularly and Vern spent only a few days a week at his business. Vern was a tall and imposing man, shame about the limp dick syndrome...Debbie on the other had was pretty short at maybe 5'2" or 5'3" and while not exactly fat she was well rounded in all the right places!
So after laying out the plan, while sitting in the hot pool it comes as no surprise to me that Debbie is getting close to rubbing my crotch as her hubby and I agree on me 'auditioning' for stand-in dick. As Vern turns to Debbie to ask her what she thinks, she's already ahead of him, her hand now wrapped around my fully erect dick. Debbie tells Vern she'll have to use me first to see if I'm any good and starts to straddle my legs, never letting go of my shaft. Now sitting astride my legs she gets both hands on my rigid member, massaging my nuts, describing to her hubby how hard I am, how thick my shaft is...how she wants to just climb on top of it right now...
Vern is looking at me in an approving way, watching his wife get all hot while stroking another guys cock in front of him. Getting out of the pool we dry each other off and for the first time I see how nicely trimmed Debbie's cunt is, bald around the cuntlips, with a close cropped tuft above her clit being all there is...perfect for muff diving I thought...
Debbie may have been reading my mind because she lays down on the edge of the bed, legs spread slightly. I kneel down and plant my face between her thighs, going directly for her fanny, she's soaking wet...well, her hubby and her had been at the motel for a few hours already... Lapping at Deb's fanny she is softly stroking my head, making soft moaning sounds as I tongue her hole, suck her lips into my mouth and then begin flicking her clit...she cums pretty soon.
Sitting up, she reaches for my stiff prick and drags me onto the bed, pulls me in between her spread legs and as she positions my dick at her juicy fuckhole with one hand, she's got another on my bum. Fingernails digging in firmly...as if to make sure I don't pull away....little did she know I wouldn't want to pull back now, my cock can feel the heat from her well licked pussy and as soon as I get my knob in I don't hesitate to simply drive my whole length up her fanny, balls ending up against her plump arse in one swift stroke. As I hit bottom all I hear is breath escaping from Debbie as she exhales slowly and as I stay all the way in her hot hole she moans low and looks at her hubby...pretty good so far, she whimpers at him, now let's see if he can pump...