Willow, Buffy and others in “What's My Line, Part Two”

There's a Slayer handbook?

Wait. Handbook? What handbook? How come I don't have a handbook?

Is there a T-shirt, too? 'Cause that would be cool...

After meeting you, Buffy, I realized that, uh, the handbook would be of no use in your case.

Well, what do you mean it would be of no use in my case? Wha- what's wrong with my case?