I was delighted and I told her I would. She said that Graham was working night shift so there was no chance of him dropping in on one of his late nigh... visits and catching us getting high.That night we had a few joints and chilled together on her couch. We watched some TV and chatted till the early hours, then I headed for home. Over the next month or so we repeated our little get together around 6 or 7 times. It was always after 10pm, when Graham's night shift started. I usually left her place. Her ass seemed to be melting around her son's hard, spurting prick.A big jet of cum flooded her insides, then another and another, until Cathy's ass was awash with her son's hot sperm. Spunk hung off his prick in strings each time he pulled out of her ass. It overflowed and poured from her asshole in torrents, saturating her upper thighs and dribbling down into the slit of her pussy. Bobby reached beneath her and cupped Cathy's steamy cuntmound, rubbing a handful of the sticky slime over her. The young tender flesh puffed out even more from her breasts and he remarked on how soft they felt on his tongue. As John licked and mouthed the nipple meat, her dark puffy tits really did grow larger, actually bulging into his mouth. It was so incredibly arousing seeing and feeling her body respond to his advances. He aroused Kelly too, tremendously, as he sucked on them, almost making it feel as though he could suck off her tender sensitive nipple meat from the rest of her breast. Kelly. ." She said, extricating herself from my lap and standing up. "Turn in the chair so you're facing me."I did as she instructed and she proceeded to kneel in front of me."I'll clean up after myself." She whispered conspiratorially before leaning forward and starting to lap at my balls with her tongue. It was the singular most luxurious sensation I have ever been lucky enough to experience. Warming to her task, she took first one in her mouth, then the other, sucking my spilt load into her hungry.