Why do the brakes keep squealing?
Because the driver hit it too hard.
Why do the brakes keep squealing?
Because the driver hit it too hard.
Okay, so basically, the joke is playin' on the sound brakes make when they're used too hard. If you slam on the brakes, sometimes they can squeal. It's like when your mom yells at you for not cleanin' your room, but instead, it's a car part screamin'.