A boy racer is a motorist who drives an automobile that has been modified with aftermarket body kits, audio system and exhaust system, usually in an unlawful manner. It can also mean a compact sporty coupe that is heavily modified for racing. Wealthier motorists who drive sports cars, or those with costly modifications, often seek to distance themselves from the culture. Responses to the boy racer phenomenon range from laws prohibiting cosmetic modifications to vehicles such as decorative lighting and window tint, restrictions on recreational driving ("cruising"), to vandalism such as spraying expanding foam into cars with loud "big-bore" exhaust tips to stop such cars driving around emitting loud droning noises.