It starts out normal, but...

At first Monica gives the standard self-defense talks, showing how to push an attacker or trying to de-escalate the situation, using you as a prop. You're starting to feel as if the class might be not too bad after all.

Eventually though, Monica moves on to showing how to get out of wrist grabs. She shows a few twisting maneuvers, making you hold her wrist tightly to show the difficulty in escaping.

"But, if you just can't manage to break his grip like that, there's an alternative!"

Too your shock, Monica reaches forwards and grabs your 'package' through your pants, her fingers cupping your balls. You freeze in surprise, but Monica goes on as if she's done nothing unusual.

"Most guys will let go pretty quick once you get a grip on them down here. If not, just squeeze!"

She demonstrates, but doesn't actually try to hurt you at all. Instead, it's like a gentle massage as she kneads your balls with her fingers. It feels good...a little too good in fact. You realize your dick is straining against your pants and the audience is giggling again.

Monica smirks as she quips, "normally the attacker's erection will subside when he takes an attack like that, so this is a bit backwards. The technique is the same though."

Sarah the red-headed college student asks a question with an impish smile. "Miss Monica, I can't really see clearly how you're gripping him. Maybe we should clear away some of the 'obstructions'?"

A housewife - Sherry you think- catcalls you as the room erupts into laughter.

Monica grins, and before you realize what's happened, she's removed her grip and pantsed you.

You blush and try to recover your dropped pants, but Monica steps on the middle, making you nearly fall over as you try in vain to raise your pants.

Then, you feel her hands cupping your exposed balls in front of everyone, giving them a light demonstrative rub while your dick stands erect and bobbing about in front of everyone.