A common way of rating things. One either places his thumb up to indicate something is good, or okay, or places their thumb down to indicate the thing sucks.

www.urbandictionary.com converted to this system over the star rating system, I think it stinks.
the thumbs up thumbs down system sucks.
by Conor June 2, 2004
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A saying, usually said at the end of a movie or performance, that basically means that you liked it a little bit, but it wasn't perfect.
I put left thumb up, right thumb down for that movie.
by Seshie January 15, 2009
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