I happened to meet a close-knit mother and daughter. However, I couldn't help but get an erection from the mother's voluptuous body... I tried desperately to hide it, but the daughter spotted it! Noticing her daughter's reaction, the mother tried to distract her, saying "Don't look!", but seeing a fully erect cock for the first time in ages made her horny... The moment the daughter stepped away, she whispered, "It's my fault, isn't it?" and gave me a cheating blowjob! Just as things were heating up and I thought we had an adult relationship, the daughter returned and caught us! As the mother and I frantically tried to make excuses, the daughter gave a little devil smile and said, "Hmm, isn't Mom being greedy?" Then came the shocking proposal: "I'll keep it a secret from Dad, so let me join in too!" An unexpected invitation to a mother-daughter threesome! Between the mother, who can't let her husband find out, and the little devil daughter, their double attack keeps me erect and cumming nonstop!!