I think it came originally from the Spinners also, IIRC: together with silly bits of clowning like "East/West Indies" looking in different directions, as also with "down there in the bay". Even more of a pity that it became almost standard practice, along with sillinesses about sharks playing melodeons & so forth. Have always been surprised at such insensitivity on their parts.

But certainly Louis never did such, and I am sure would have been horrified by this manifestation, which I still insist I observed.

~M~