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2 definitions by Jackie Dee

That guy, usually someone you don't know, that ruins an otherwise good picture by pulling a stupid face.
Ladies, that would've been a hot picture too bad that random douchebag is lurking in the background.
by Jackie Dee April 09, 2008
1. The combination of the names Jon Stewart and Stephen Colbert.

2. Short term for the hour of television featuring The Daily Show and The Colbert Report.

3. A synergy of comic genius unprecedented in history.
"It's 11pm - time for the Stewbert hour!"
by Jackie Dee January 11, 2007