"Simple Simon" is a popular English language nursery rhyme.

The verses used today are the first of a longer chapbook history first published in 1764. The character of Simple Simon may have been in circulation much longer, possibly appearing in an Elizabethan chapbook and in a ballad, "Simple Simon's Misfortunes and his Wife Margery's Cruelty", from about 1685. Another possible inspiration was Simon Edy, a beggar in the St Giles area in the 18th century.

The rhyme is as follows:

"Simple Simon met a pieman,

Going to the fair;

Says Simple Simon to the pieman,

Let me taste your ware."

More Info: en.wikipedia.org