The effect one gets when there are 15 or more people in a single elevator, effectively causing it to look like there are a bunch of clowns in the elevator.
Person 1: Dude, we all look so stupid in this elevator
Person 2: Yeah, that's the clown car effect for ya.
Person 2: Yeah, that's the clown car effect for ya.
by ThatGuy1010101 September 27, 2011