The clip comes from It's Always Sunny in Philadelphia, in the 2008 episode The Gang Solves the Gas Crisis. Charlie Kelly invents Wildcard as his loose cannon persona within the gang's made up roles, then proves it by cutting the brakes and leaping from their moving van while shouting the line. The scene became one of the show's most quoted moments, spreading as a reaction clip and soundboard staple online because it perfectly sums up a friend who ruins the plan on purpose.