Jesse: So, um, what did you say your name was?

To make you a vampire they have to suck your blood. And then you have to suck their blood.

Buffy: Well, I wasn’t! It’s my first day! I was afraid that I was gonna be behind in all my classes, that I wouldn’t make any friends, that I would have last month’s hair. I didn’t think there’d be vampires on campus. And I don’t care.
Giles: Then why are you here?