Updating Partridge's CATCH PHRASES

[RonButters at AOL.COM]

In a message dated 8/23/99 12:41:04 AM, Bapopik at AOL.COM writes:

<< IF YOU'RE SO SMART, WHY AIN'T YOU RICH?--Not in Partridge, but it came up
while searching "ain't."  I couldn't find it in other books, either.  The PCI
has it from May 1971, AMERICAN ECONOMIC REVIEW, pg. 289. >>

Eudora Welty uses this in her short story, "Why I Live at the P.O." (c.1940).
A character--a child--says it.