Buffy and Xander in “Normal Again”

Then I was like... No, it wasn't like, I was in an institution. There were, um, doctors, and nurses and other patients, they told me that I was sick... I guess crazy. And that, um, Sunnydale and all of this, none of it was real.

Oh, come on, that's ridiculous! What, you think this isn't real just because of all the vampires, and demons, and ex-vengeance demons, and the sister that used to be a big ball of universe-destroying energy?