This reminds me of Waiting For Godot: "ESTRAGON: And so on. VLADIMIR: The point is— ESTRAGON: Until he comes. VLADIMIR: You're merciless. ESTRAGON: We came here yesterday. VLADIMIR: Ah no, there you're mistaken. ESTRAGON: What did we do yesterday? VLADIMIR: What did we do yesterday? ESTRAGON: Yes. VLADIMIR: Why . . . (Angrily.) Nothing is certain when you're about. ESTRAGON: In my opinion we were here. VLADIMIR: (looking round). You recognize the place? ESTRAGON: I didn't say that."