The coach challenges you

"Well," says Ashley, thoughtfully, "I think John is only brave enough to get a boner because he thinks he can hide it. Look how embarrassed he is, now that he knows everyone can see it! I think if John knew that everyone in the class could see his penis, and he didn't have any secrets, he wouldn't dare to think perverted thoughts."

"That's an interesting idea," says Coach Preda. "John, what do you think?"

"Uh," you say, as the girls all look at you with predatory gleams in their eyes. "I... don't think that's quite right. I mean, they can all... they can all see anyway, so..."

"But you still have an erection."

"I guess that's true..."

"I'll make you a deal. If you can lose your erection in the next ten minutes, you won't have to spend the rest of the class doing exercises in the nude while all these beautiful girls make fun of you. Does that sound fair?"

"I... I guess..."

"Great." Coach Preda clicks a stopwatch. "Okay, your time starts now. And don't look away from the girls, or it doesn't count."

The girls are standing in a circle around you, grinning and giggling, looking you up and down as you desperately try to think unsexy thoughts. Your eyes roam from one nubile body to the next, eyes magnetically drawn to breasts and hips, so rounded and inviting... no! Think about baseball! Sweat rolls down your back as you realise you're hard as a rock, and you can't seem to make the evidence of your arousal go away. Ashley, grinning, blows you a kiss.

Then she pulls Shannon's shorts down around her ankles, revealing her lime-green panties. The resulting squeal, embarrassed crouch, blushing cheeks and flustered struggle to get her shorts back up her legs, a procedure which Ashley seems determined to frustrate, makes you harder than you've ever been in your life. You can't stop watching. It's the most captivating thing you've ever seen. The coach shakes her head in disapproval, but doesn't lift a finger to intervene as Ashley, smiling sweetly, pins Shannon's shorts to the floor and watches her frantically try to yank them up.

"Time's up," she says.

"Uh..." You had barely even noticed the minutes passing. You look down, and realise in horror that your erection's more visible than ever. You look up, and see that the girls have all noticed it too. The smiles on their faces are utterly terrifying.

"Well," says Coach Preda. "Looks like you failed the test, John. Time to get naked."