I don't know where some of these YouTubers dig this stuff up. This is, apparently, a sketch that the hilarious Pat Paulsen of The Smothers Brothers Comedy Hour fame taped for The Merv Griffin Show in 1974 that, for reasons that I'm sure are obvious, never aired. So I am told.
Pat Paulsen on Late Night with David Letterman in 1982:
The men that made Paulsen famous: