I feel compelled to ask the same question. Were you a bad boy telling racist jokes at the water cooler and hanging the Playboy lingerie calender in your cubicle?
Just a suggestion, but you might want to consider just slightly laughing to yourself about every ten minutes or so when you are in this "class". When they ask you what is so funny, just say in a soft whisper, "If you people only knew. Seriouly, I'm not allowed to tell, but if you REALLY only knew."
Might as well play with their minds as much as they want to play with yours.