The liberal sense of humor is very selective, even when it is about issues and not a personal attack.

Elton John loves Andre Agassi, and he loves Las Vegas.

But Sir Elton absolutely despises Dennis Miller.

The superstar pop music icon -- who earlier in the day confirmed to us our August report that he is going to become a Strip headliner -- attacked Miller from his piano perch at the end of Saturday night's "Grand Slam for Children" benefit hosted by Agassi at the MGM Grand Garden Arena.

"Americans are always asking why the rest of the world hates them," John said after singing his first song, "Tiny Dancer." "Well, the reason is Dennis Miller."

"You've all gone mental if you liked that," John said, before looking at the floor and shaking his head in disgust.

Earlier in the show Miller delivered about 20 minutes of his usual act -- biting, sarcastic political humor with a very strong right-of-center slant.

Miller's remarks include bits about not caring about blowing the Baghdad Museum to bits, and his advocating killing caribou and raping Alaska for oil so there would be a lessened dependency on foreign outlets.