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When a person is doing somthing and then looks around and the majority of other people seem to be doing or about to do them same thing.

When playing grand theft auto and the character gets into a car suddenly the majority of the cars in the area seem to be the same.
When going for a run or about to look around and notice lots of other people doing the same thing this is called the grand theft auto effect!.
by Lil bezz July 29, 2010
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