Here's something you don't see every day...Johnny Cash doing an Elvis impersonation. It's worth a chuckle.
For those of you who don't know, Cash and Elvis knew one another through Sun Records, who I believe was the first record label they signed to (at least it was for Cash, and I'm assuming Elvis as well).
The two of them toured together in the 1950s...so anything in this video I can only interpret as friendly ribbing. I believe Elvis returned the favor and did Cash impersonations on stage as well, although I haven't found footage of that yet...have fun with this and share it.