Gelett Burgess. 1866– 36. 
The Purple Cow 
(Reflections on a Mythic Beast Who’s Quite Remarkable, at Least.) 

I NEVER saw a Purple Cow; 
I never hope to See One; 
But I can Tell you, Anyhow, 
I’d rather See than Be One.

Oh how I love this poem.  It is so silly.