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5.
1. The realization that someone has gone off the deep end.

2. Acting wildly foolish.
Tommy jumped the couch at the party when he told everybody he knew more than they did.
by LucySkyDiamonds August 05, 2005
 
1.
The defining moment when you know someone has gone off the deep end. Inspired by Tom Cruise's behaviour on Oprah
Inspired by Tom Cruise's behaviour on Oprah
by Asher77 August 08, 2005
 
2.
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 03, 2005
 
3.
To lose it, go crazy, go mad.
"Tom Cruise really 'jumped the couch' on the Oprah show yesterday. Someone confiscate his crack-pipe!"
by Vanessa Anne August 18, 2005
 
4.
a rare disease where one randomly decides they should kill oprah, join scientology, or suddenly marry katie holmes.
Tom Cruise is one of the poor souls who have been diagnosed with the Jumping the Couch disorder.
 
6.
to go totally mental
;to pull a Tom
"Now now settle down, don't go " jumping the couch.."
by LINDAR May 27, 2006
 
7.
A celebrity committing career suicide on live television. Also see jump the shark.
Tom Cruise jumping the couch on Oprah.
by zygnus October 27, 2008