[vg_byrev] [vg_youtube 16ks_TcaOUs#Letterman suggests Palin's daughter is a prostitute##letterman palin joke youtube - Letterman suggests Palin daughter is a prostitute] [vg_youtube Zi3lJpdyAzM#Letterman Says Palin Joke In "Poor Taste" (Countdown)##David Letterman admits he is "guilty of poor taste" in a taping of "Late ...