Not only was the auto-tune not working properly, but someone was raping a retarded cat somewhere behind the scenes that's being picked up on someone's microphone.
Ah, the kids are screaming so loud, no one notices. And everybody does it.
During their last touring days, Paul would fart into the microphone while Ringo would burp the drum beats. During a St. Louis show, George just jerked off on his guitar for the feedback. Fans ate it up.