Scully: So, what are we talking here, Mulder, a possessed rat? The return of Ben?
Mulder: No, I think those rats were killed trying to escape from something.
Scully: From something that sent them diving into the toilet.
Mulder: No, the lids were down. They weren't trying to get into the toilets, they were trying to get out. They were coming from within the sewer lines trying to get away from something.
Scully: Have you been drinking Yaje, Mulder?
Mulder: Go with it, Scully.