look up any word, like dirty sanchez:
 
1.
The act of removing the muffler from your "pimped" hatchback to make it "sound fast" or like a "real car" Similar to children putting a playing card in the spokes of their bike to make it sound like a motorcycle.
Hector, I love Playing Cars! Even though we are doing 25, it sounds like we are in a race car! Look at all those bitches checking us out!
by Kavka June 05, 2010
 
2.
Having sex, fucking. Code word so others dont know what you are referring to.
Chilling with the wife and her parents, using the code words playing cars.

Hey later can we play cars?
by stuckingunru December 06, 2009