So far, no one has come up with any convincing explanation of the phrase, "It's genius! Genius, I tells ya!" But half the Internet has written to tell me the same theories I found when I Googled the phrase before asking here.
Yes, yes. There are people out there who theorize it was uttered by Jackie (Ralph Kramden) Gleason on The Honeymooners. Has anyone ever pointed to an actual episode where he said it? It sounds more like Ed Norton, anyway…