[he's half listening as he leans in to study the painting, chipping at it slightly with his thumb.]

It's better than graffiti. It's like primitive cave-art, less primitive--the Cave of Altamira as done by paranoid schizophrenics. On acid. You just gotta have an eye for it, Scully.

[a little more chipping at the paint, and now he's smiling at the wall.]

Catwoman. Me-yow.

[aaaand moving on, like he hadn't said anything:] Don't tell me they haven't told you where we're supposed to be.