noun. A milfistic Olympian who may have, under her jurisdiction, a red-headed stepchild.
Real citation: "@JayOnrait I believe she's a step-milfimpian"
(Feb. 22, 2010, Jeff Sykes, Twitter, http://twitter.com/jeffsykes/status/9477390674)
Made-up citation: "Soon after Bill Simmons coined 'milfimpian,' the step-milfimpian evolved. Can the grand-milfimpian be next?"