(Dwight is making everyone write down what diseases they have, so he can pick an insurance according to it)
Jim Halpert (to Pam): Wait, what are you writing? Don't write "Ebola" or "mad cow disease". All right? 'Cause I'm suffering from both of them.
Dwight Schrute: Retaliation. Tit for tit.
Jim Halpert: That is not the expression.
Dwight Schrute: Well, it should be.
Jim Halpert: If I left, what would I do with... all this useless information in my head? You know? Tonnage price of manila folders? Um, Pam's favorite flavor of yogurt, which is mixed berry.
Jim Halpert: What are you doing?
Dwight Schrute: Just clearing my desk. I can't concentrate.
Jim Halpert: It's not on your desk.
Dwight Schrute: It's overlapping. It's all spilling over the edge. One word, two syllables: demarcation.
(Jim builds a pencil defense wall around the line where their tables touch)
Dwight Schrute: You can't do that.
Jim Halpert: Why not?
Dwight Schrute: Safety violation. I could fall and pierce... an organ.
Jim Halpert: We'll see.