This is every entertainer's biggest nightmare.

Watch as singer John Davidson, who was very hot back in the 1970s and 1980s, forgot the words to the song he was performing on the Tonight Show with Johnny Carson.  We know Davidson wanted to crawl in a hole and die, but surprisingly he survives and triumphs over the song (after forgetting the words three times!).

Carson apparently didn't mind that the singer blew his song.  He was invited to sing on the Tonight Show 87 times!

Take a look...it is worth a cringe-worthy smile.  Nice save, John!

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