Help?

For once, I am being responsible and not procrastinating on homework! (Okay, I am using this assignment to procrastinate on other ones that will be less awesome.)

Fill in the blank for first year art students: "Hey, aren't you in Addison's _________ class?"

It should, if possible, be a large enough class that the (shy, not prone to people-watching or random chitchat) addressee could have been to class a couple of times and not noticed the speaker.

Or tell me if "Addison's class" could be specific enough on its own.