Edward Lear - Limerick: There was an Old Man of Vienna

There was an Old Man of Vienna,
Who lived upon Tincture of Senna;
When that did not agree,
He took Camomile Tea,
That nasty Old Man of Vienna.

Edward Lear

http://www.poemhunter.com/poem/limerick-there-was-an-old-man-of-vienna/