1 definition by Jim Scott

The defining moment when you know someone has finally lost his or her marbles. Inspired by Tom Cruise's behavior on Oprah when he jumped up and down maniacally on her couch, while professing his undying love for actress Katie Holmes. Reportedly much easier to accomplish than going off a "deep end".
There's no doubt about it, she's finally 'jumping the couch' with that one.
by Jim Scott December 4, 2005
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