1. Active Yaw Control (AYC) is an automobile feature that uses an active differential to transfer torque to the wheels that have the best grip on the road. Unlike traditional mechanical limited slip differentials, an AYC is electronically controlled.
2. What Soulja Boy was really talking about in his masterfully mixed single: "YAHHHHHHHH!"
("YAHHHHHH trick!" must refer to a driver's ability to transfer torque to the wheels that are closest to hookers you're attempting to run over.)
Jason: "wtf is active yaw control!?"
Stuart: "Automobile feature *blah* that helps grip the *blah* *blah*..."
Jason: "So THATS what Soulja Boy was talking about. . ."