The Oxford English Dictionary defines kickie-wickie as: 'a jocular or ludicrous term for a wife.'
This silly-willy word was used by Shakespeare in All's Well That Ends Well, so it isn't a johnny-come-lately to linguistic ludicrosity.
Mark Peters, lexicographer and humorist, is a contributor of language posts at MSN and you can find his articles at http://www.good.is/community/MarkPeters and at http://www.good.is/post/whoo-hoo-linguistic-reduplication/
I must admit that I am not a wife but have heard few funnier substitutions. I can hardly imagine the word being used. Can you?
K image created in Escape Motions