I came to my friend's house to help her with her homework. I witnessed my friend's mother fidgeting suspiciously on the bed while talking to someone on the phone. Without noticing that I was secretly looking, my mother pushed aside her see-through underwear and began to moan and writhe with her fingers from the front and back. Seeing the whole story of her moaning and cumming, I couldn't help but rush into her room and made a naughty request in exchange for keeping the affair with the person on the phone a secret. I wrapped the confused mother's wrists in bright red tape and sucked on her breasts. She said she wanted to stop, but she didn't seem to mind. I immediately got on top of her and had her give me a blowjob, and she gradually got into the mood and we went all the way! I'll come again, mom!