Free Beer & Hot Wings: Kids Pretend To Be Cops, Pull Over a John [Video]
This takes some balls.
These kids have a vehicle equipped with the lights that a cop car would usually have. After witnessing a guy pick up a prostitute, they decided to mess with him a bit by flipping on the lights and pulling him over.
Just imagine the relief this guy felt when he realized it was all a big prank.
Source: Free Beer & Hot Wings