Simonized is a term used to describe the process of waxing a car. It is named after the Simoniz company, which was founded in 1910 and is one of the oldest car care companies in the world. The process of Simonizing involves applying a wax to the car's exterior to protect it from the elements and give it a glossy finish. The wax also helps to reduce the amount of dirt and grime that can accumulate on the car's surface.