There are many ways to go about ridiculing Fox News screambox Bill O'Reilly. If you're mouthy, you can shout "Shut up!" at every given opportunity. If you're crafty, you can distribute personalized falafel loofahs as holiday gifts, as did the Smoking Gun in 2004. If you're enterprising, you can even start your own satirical spin-off on Comedy Central. All are perfectly acceptible ways of deriding a man who seems to have been sent from above solely for the sake of mockery. Hell, if you're lazy, you can even just don an O'Reilly mask and do a stupid dance. You cannot, however, don an O'Reilly mask and do a Nazi salute. MSNBC host Keith Olbermann tried it this weekend, and the humor just got overshadowed by that whole systematic extermination thing.