Enough! Oh, ring the curtain down! (line 47)
This brings the theater metaphor to an end with another reference to the curtain. We think that's a neat image, as if a curtain was coming down on the poem – it makes the ending feel dramatic and meaningful. It also closes off this particular section of the poem, and lets us know we're headed back to the "real" world, where our guy is waiting with his glass and his pipe.