5x138 - Late Show with David Letterman

Tonight's ""Stupid Human Tricks"": Richard Anthony of Ontario reaches back over his shoulder and gives himself a wedgie; John Rites of Nebraska fits three McDonald's burgers into his mouth; and Mike Garcia and Craig Love of Milwaukee do an impression of a helicopter as one spins on the other's head; Gene Siskel makes his first public appearance since undergoing brain surgery that April; Dave announces Johnny Depp cancelled due to the technical difficulties from earlier in the week, and Paul goes on a tirade about it.