Swingers stories and erotic fantasies

Joe and I have known each other for years, working together for a time before his entrepenureal streak took over, and he ran his own business. He is a Norfolk boy, well into his sixties (as am I) naturist, nice body, and a gift with the ladies. This is where the story starts.
We had contrived to get a couple of hours nude sunbathing down at Holkham, on the Norfolk coast....a lovely place, with dunes and natural cover for natural pursuits...Joe and I went walk-about pleasuring ourselves on the sight of many good-looking bodies: Suddenly, he spotted an older couple clearly enjoying some intimate fun. Now, I would usually walk slowly past, respecting their privacy - not Joe. Walking boldly up to them, he said 'That's the lovliest thing I've seen all day...you really are a fine-looking pair!' Without further invitation, he dropped down beside them, and started chatting as if they were old friends. Now Joe was already sporting a hard-on; not a big one, as he is not very large-cocked, but in a way that seemed to grab the attention of the couple. Whilst I kept a respectful didtance, he moved closer, and was soon stroking the lower thigh of the lady. Her husband's cock was already stiffening in anticipation....of what?
She was laughing...then reaching over to her man's todger...then playing with Joe's! Both men where now kneeling near her, their cocks being slowly wanked, before the inevitable sucking started, her large floppy boobs being well-massaged. Then I noticed Joe's hand moving down to her pubis...she opened her thighs, he probed, then entered her vagina with at least two fingers...I was rock-hard, and taking my boldest step for years, moved into the trio. Hubby was cumming...he shot a decent load over his wife's tits, the residue dribbling slowly down onto her belly...Joe laid her back on the rug, and without further ado eased his solid cock into her as far as it's limited length would allow.
Slow at first, then he met her natural rythm, the two of them moving as one, until he jerked several times signifying his ejaculation...she was still clawing at his arse cheeks, pulling him into her.....then he slipped out, his sticky cock softening even as he fell back onto the rug.
I did'nt think twice...taking up position over her,I eased my thick helmet into her slippery cunt-lips, her hands grabbing my arse-cheeks as she pulled my full length into her lusty hole....' Hell..this is good!' I could feel my full hardness penetrating her hot pleasure-cave, stroke after stroke, but aware that I was not yet ready to come...but now she was...her pelvis and thighs grinding into me as she approached her climax....then, wham! She shuddered, shook, said some very rude words and almost bit my ear off!
Some trigger somewhere deep within me said 'Go-go-go...' -and I went, or rather came: Suddenly I was thrusting and pumping like mad, shooting goodness knows how much fertile seed into her womb, until the urge ebbed away. Like Joe, my cock softened, slipped out, and lay uselessly accross my thigh, the last vestige of transparent fluid leaking from it.
For several minutes we lay, lightly carressing each other in the glow of fullfillment. 'Thanks, boys...that was rather nice!' So said the lady! We made our excuses and left, but to this day I take my hat off to Joe for an experience I shall never forget!.
The funny thing was, it took nearly an hour before my foreskin re-asserted itself and finally concealed my purple pleasure-sensor!