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Mid-court proposal at NBA game goes bad?

From ImprovEverywhere.com, over 200 people freeze in place on cue in Grand Central Station in New York.

Friends prank sleeping passenger.

http://www.break.com/brotherssolomon/sleeping-van-scare-prank.html

Helpful bystanders lead a protest march.

http://www.metacafe.com/watch/1045898/funny_prank/

Free photo booth.

Unsuspecting victims hear squealing tires.