Attention, shopper
Attention, shopper
[Black Hat is holding a golf club and speaking into a P.A. system.] Black Hat: Attention, Black Hat: To the owner of a Dodge Viper SRT-10 with license plate "MYTOY," your lights are on and your windshield was just smashed with a golf club.

A common trope (often referenced in TV and film) is a loudspeaker announcement in which a store employee (or anyone else in charge somewhere where people gather, like church or a school) announces that a certain colour and model of car has its lights on, or is blocking another car, or is about to be towed, or similar. A licence plate is sometimes included to allow the owner to identify that it is specifically their car that is involved.
In this case, Black Hat is up to his old ways as, in addition to announcing that an SRT-10 has its lights on, he also announces that it has had its windshield smashed with a golf club. Black Hat is, of course, holding a golf club, frustrated at the owner’s revolting arrogance. The lights are probably on because the attack triggered the car's alarm system.
The Dodge Viper SRT-10 was a version of the Dodge Viper available on the third and fourth generations of Viper from 2003-2010. It was a very expensive sports car.
The two license plates in the comic are personalized license plates. The one in the comic-proper is clearly "My Toy"; the plate in the title text is most likely "Dad's Money," which Randall suggests is a real plate on a car outside his building, suggesting that the driver's father paid for the car, bragging about how rich their family is. This car will likely also soon earn Black Hat’s wrath.
[Black Hat is holding a golf club and speaking into a P.A. system.] Black Hat: Attention, Black Hat: To the owner of a Dodge Viper SRT-10 with license plate "MYTOY," your lights are on and your windshield was just smashed with a golf club.
