Cordelia:  Uhhh, what?

Giles:  Oh! I’m sorry. Um, your hair, uh…

Cordelia:  There’s something wrong with my hair? Ohmigod! (quickly leaves)

Giles:  Xander was right. It worked like a charm.

Buffy the Vampire Slayer, Season 1: Episode 9 – “The Puppet Show”