(The trick with this skit is to do it the night after doing Bell Ringer #1, and to do everything exactly the same - perhaps with a little more hamming it up)
(When the Applicant arrives the Hunchback says:)
Hunchback: You look just like the guy who was here yesterday.
Applicant: Oh, that was my twin brother.
(Revert to the original dialog again. The audience will think it's getting a re-run and prepare itself for a 'groaner' of a cheer. When they hear the ending, you'll get a great reaction.)
(Carry on with dialog, except for the last line.)
Hunchback: No, but he's a dead ringer for the guy who was here yesterday!