Charlie Hodge Interview Elvis Unlimited Sweden:

Question: I always wanted to know what happened that time during Are You Lonesome Tonight when Elvis laughed so much, I heard that he laughed at a bald guy in the audience?

Charlie Hodge: I think that the main thing that "cracked" Elvis up was that when he changed the lyrics the people in the band started to laugh and when you see other people laugh when you are not supposed to it’s even harder to stop yourself.

Quelle: Elvisnews.com