noun. Approximately a metric buttload. Nearly a metric booty-load. Not quite a metric smurfload.
Real citation: "It's come to my attention that when you have a baby girl you receive a whole badonkadonk-load of pink stuff."
(Feb. 14, 2008, letter B, http://letterb.typepad.com/letter_b/2008/02/be-mine.html)
Made-up citation: "I'll have a badonkadonk-load of Swedish pancakes, please. It takes a lot of fuel to keep this sweaty amalgam of testosterone, muscle, patriotism, generosity, skepticism, moxie, love, and modesty humming along. Mmm-hmm. And don't skimp on the cinnamon buns."