[justlurking]

The original Harvey Korman-Tim Conway dentist script (spring 1969) was one of the funniest in TV history.

One of the cast's favorites is this one:

Carol Burnett Show outtakes - Tim Conway's Elephant Story

You have to listen until nearly the end at 4:21. Vicki Lawrence delivers the coup de grâce.

[tophat9000]

You have to listen until nearly the end at 4:21. Vicki Lawrence delivers the coup de grâce.

Classing example of perfect deadpan timing making the line