The Praise of Hemp-Seed. by John Taylor.
From one of the best online collections of e-texts (Renascence Editions) a transcription of one of the earliest nonsense poems in English.
Note: The works (1630) of John Taylor, the water-poet, are available in PDF facsimile at Early English Books Online. Be warned that it is a 150MB download! Also, I don’t know why but it is to be found under Theology in STC I.