Yelling random stuff at people from a moving car at people walking down the street or standing at a bus stop. Always done by hilarious people riding together who think this is the most hilarious thing to do on the face of the earth.
Guy in car drive-by yelling at other guy standing at the bus stop: "Second class citizen!!!!!"
Guy at bus stop (pretends not to notice)
Other passengers in car: "Dude, you're the best, haw haw haw."