Definition from Wiktionary, the free dictionary
shimmy-shammy (plural shimmy-shammies)
- Secretive, illicit activity or favor trading.
- "The four-month suspension is, in effect, the result of a little political shimmy-shammy. In return for some high profile Gorecki supporters endorsing Bob Spence, a judicial candidate favored by Thomas, he agreed to the four-month suspension." -Chicago Reader, February 10, 2006, Michael Miner, "Court of No Resort"