I came across this story on a boxing site. I've heard it before but never had it verified.
[Muhammad Ali and Elvis Presley
Elvis came to my training camp in Pennsylvania, stayed two weeks.
Nobody knew about it. One night I said, 'Elvis, do me a favor. I got a guitar. Please come with me down to Pottsville, little town nearby, this redneck place called poonies.' I called the owner, told him to let us come in the back door.
Elvis went up to the mike, towel over his face, took it off" - and here Ali imitates - "'You ain't nothin' but a hound dog, cryin' all the time.”
Then we flew out the door again.
Can you imagine bein' in a little one-horse town and Elvis Presley runs on stage? Man, people ran all outta the place lookin', gettin' in cars, tryin' to find us.
Elvis said 'Champ, I've never done that before in my life']
It's a cool story if true.
Anyone got the facts?