#2692: Interior Decorating explain

[Cueball and Megan stand in a room. At one wall a sword hangs by a thread above a chair. On another wall a rifle is fastened to a board with illegible writing. Megan has one arm stretched towards the rifle.]

Cueball: Yeah, I think the sword of Damocles looks nice hanging over the Siege Perilous.

Cueball: Hey, don’t touch Chekhov’s gun!

[Caption below panel:]

My home decorating theme is “ominous metaphorical objects.”