If he had done it with ketchup, that would have been thinking inside the box. It’s a subtle difference.
↓ Transcript
Panel 1:
Vlad and Estragon
Vlad: You're going about this payback thing all wrong. You've gotta get inside his head.
Panel 2:
Vlad and Estragon
Estragon: Explain.
Vlad: Think outside of the box.
Panel 3:
Xeno, alone, with a handful of mayo packets.
Xeno, thinking: Why the hell do I have all these mayo packets in my pocket?
Vlad and Estragon
Vlad: You're going about this payback thing all wrong. You've gotta get inside his head.
Panel 2:
Vlad and Estragon
Estragon: Explain.
Vlad: Think outside of the box.
Panel 3:
Xeno, alone, with a handful of mayo packets.
Xeno, thinking: Why the hell do I have all these mayo packets in my pocket?
