Gym monitor abuses with one of his girls' big cock

This gym monitor has a very special treatment for the girls who stand out the most in their classes. It's something everyone likes, because uncle has a huge cock. What he does is put them all to practice and when they are doing their most sensual positions he puts himself in the back and starts to put them in hand. Then he forces them to suck his cock and when the other students have left the gym he fucks them. This busty one surprises her at first, but as soon as she puts herself at her disposal, she bursts her in a brutal way that is sure to make her return to the gym tomorrow.