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4.
When you start to get a boner at random times for no reason.
"Dude, I am totally getting a spinoff watching the news right now."

Cleveland, while chained in the basement watching a 24 hour loop of the DirectTV help channel, "Did I tell you I'm getting a spinoff?"
by Anonymous2231 July 18, 2010
 
1.
1. A book or seris based off another seris.
2. A seris character getting their own seris after the first seris is completed.
1. The book "Wicked" is a spin-off of "The Wizard of Oz".
2A. The show "Frasier" is a spin-off of "Cheers".
2B. The show "Joey" is a spin-off of "Freinds".
by HiddenBeauty June 27, 2006
 
2.
(n.) Any franchise which was born from a cameo of another franchise.
Angel was a spinoff of buffy.


All marvel chractors are spinoffs of another, except some adam/eve charactor that hasn't been seen since 1940.
by Gumba Gumba August 04, 2004
 
3.
A product that started out as a feature of a once successful product whose market potential is exhausted, often a TV show or movie.
"Frasier" is a spinoff of "Cheers".


by Delusional October 08, 2003