I thought this was The Invisible Man seated with Jerry Colonna, but he calls his invisible partner Yehudi, referring to a running gag on the Bob Hope show about the violinist, Yehudi, he was searching for and could not find.
Whoa! The bubble is aloft, but what lies below?
We can count on Harpo Marx to pull out a slingshot and reveal to all what’s hidden behind the bubble.
We are just as surprised as Miss Rand to find her barrel exposed.
Clark Gable, at last, catches up to the beautiful dame…
…only to find that it’s Groucho Marx in drag, who says, “Well, fancy meeting you here!” to a shocked Gable.
https://www.youtube.com/watch?v=xOFG_qmoH8I
Source: (Blogspot)