American term for Jap car drivers, but applies to drivers who do things like below. This is from an American friend of mine, not my opinion of course...

You might be a ricer if...
You have more exhaust decibels than your engine has horsepower
You ever painted your wheels to match the same color of your car
You installed spacers on your STOCK wheels and tires to get them to stick out past the fender
You ever put neon on the bottom of your car, and then busted it on the first speed bump you went over
You want the 'wastegate' sound, but don't want to install a turbocharger system
If you have ever claimed that switching to a cone filter has given you more than 5 HP
Your four cylinder has a dual exhaust system installed (DUCKS from various members on here!)

If you have ever thought Hyundai and "performance" went hand in hand
Flying past the person who is 10 car lengths in front of you after they have put on their brakes.. and claim a victory
Your little sister is the only one impressed with your car
You take offense when people say.. "your sister is like your car.. small, tight and hard to get into
I have loads more....