You try to protest

Coach Preda's eyes narrow as she sees you struggle. "Stay on the ground, Doe," she orders brusquely. "Spread your legs and put your arms straight out behind you."

You try to protest when she squats back down; this time, your mouth is wedged open by her ass, so that you're **** to swallow her essence as she shoves it down your throat. But the coach is a powerful woman, and she easily pushes your body into place with a hand on each shoulder, holding your shoulders down firmly. She doesn't give you time to adjust either, but instead slams herself all the way down on your face, burying you in her asscheeks and forcing you to inhale more of her musky flavor.

You buck wildly with your hips, probably putting on an amazing show for the class. The coach is merciless with you though, slamming herself down onto your face over and over again and forcing your lips tightly into her hole while she rubs her crotch over your nose. You try to push back against her body with both hands, but she holds firm. Your head spins in circles with her relentless grinding, forcing you deeper and deeper down into her groin with each thrust until eventually you can finally close your mouth.

However, your teeth catch on something at the last second. You hear a tearing noise as Coach Preda pulls away in shock. The class howls in laughter as you sit up and spit out the cloth in your mouth. Oh no, these are her panties!