This was wonderful! Really funny stuff. I'd provide quotes, but then you'd just see the whole story again. Well, okay, one bit that hasn't already been posted:
“Hey, are there gonna be refreshments after? Frannie said there would be cookies.”

“Ray? Some manners, please?”

“What? I’m starving here, Fraser.”

I can just hear Fraser's slightly peeved tone and Ray's innocent reply. I think the instructor is going to need a few stiff drinks after this class!