Bill Maher is immune to embarrassment. Which for him is a good thing because he sure does make a fool of himself often. 

Recently, Dr. Phil was a guest of Bill Maher's podcast and while Bill was rambling on and on about how married couples begin to resent themselves and their partners, Dr. Phil began squirming in his seat. 

You could see the wheels turn in his head as he listened to Maher spout the garbage coming out of his mouth, just waiting for his chance to talk. And when it came, it didn't waste of second of it.