Ha, yep, found it:
https://www.youtube.com/watch?v=R2BdoPTGc64
Liberace, a natural ham and a good sport is able to pull off a comedy bit with no probs....and I remember Super Dave Osborn from back in the day on David Letterman lol.
Brings to mind this traffic cop sketch by Key & Peele:
https://www.youtube.com/watch?v=52br8-y0ONU
That is great! Thanks so much for finding and sharing both of these you tubes!
Liberace seems to have been a unique artist! He exhibits joy. What the world needs now is Joy, just Joy! Take your dour wokery and go the heck away.