What a wonderful bird the frog are

What a wonderful bird the frog are
When he stand he sit almost;
When he hop he fly almost.
He ain’t got no sense hardly;
He ain’t got no tail hardly either.
When he sit, he sit on what he ain’t got almost.

An anonymous 19th century poem, perhaps even earlier. It was found in print in 1922 and was quite a viral hit at the time, says Wikipedia, which gives different punctuation to the lines.

An urban legend ... where did it come from?

And a round song - here's an eight-part version -
(via)