In Act 1 of Waiting for Godot, Estragon discards his boots because they are too tight. At the beginning of Act 2, Vladimir points triumphantly to the boots as proof that the two are in the very spot where they waited in vain for Godot the previous night:
ESTRAGON: They're not mine.
VLADIMIR: [Stupefied.] Not yours!
ESTRAGON: Mine were black. These are brown.
VLADIMIR: You're sure yours were black?
ESTRAGON: Well, they were a kind of grey.
VLADIMIR: And these are brown? Show.
ESTRAGON: [Picking up a boot.] Well, they're a kind of green.
(Beckett 1986, 60-1)
Walking as Art