The X-Files Season 9 Episode 20

(Mulder is relieving himself by the side of the road)
Frohike: Hey, hot shot! You might have the common courtesy of doing your business there downwind.
Mulder: Oh, boy.
Langly: Why don't you just finish draining the little lizard and then we'll talk?
Byers: We're very worried about you.
Frohike: It's craziness, man. Turn around.
Langly: Just hang a big U-ie and never look back.
Mulder: I can't.
Byers: Why risk perfect happiness, Mulder? Why risk your lives?
Mulder: Because I need to know the truth.
Byers: You already know the truth.
Mulder: I need to know if I can change it.
Langly: Change it?
Frohike: For crying out loud. All you're going to do is get yourself killed.
Scully: Mulder! What are you doing?
Mulder: I'll be right with you, Scully.