Late Show with David Letterman

Season 6, Episode 149

Episode Title: Stupid Pet Tricks, Janeane Garofalo, Brian Regan

Air Date: 1999-05-10

Overview:

The secret word is ""ball""; an audience member is stifled by a barbershop quartet in the latest edition of ""Who Asked For It?""; a dog gets injured during ""Stupid Pet Tricks,"" prompting Dave to keep on eye on him in the green room.