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.

From The Office – Season 1 Episode 1: ‘Pilot’ (1×01)