A dumb Mexican kid got into debt with a gym trainer, The trainer, annoyed by a 15-day delay due to the debt, went to the dumb kid’s house to collect it. However, the dumb kid didn’t have the money and was about to get fist-fucked by a Madrazo when, suddenly, the kid’s sister appeared and convinced the trainer not to beat him up, explaining that she had a way to pay off her brother’s debt. What she did was give herself a world-class ass-fucking, so thorough and delicious that the trainer gave her more protein and left poor dumb kid behind. However, the trainer made the dumb kid watch everything he did with his sister, causing him to get a raging boner. When the trainer left, the horny kid begged his sister to help him cum because if he didn’t, his balls would hurt later. And that’s how the dumb kid ended up fucked by his sister.