You'll find that living in Australia, many Aussies call any Japanese car a "rice burner". Doesn't matter if it is stickered up or turbo'd, the fact that it was produced in Japan is enough to warrant it being called a "rice burner". This isn't a new thing, they were even doing it when my dad was at Uni.
"Rice" is generally considered to be anything that alludes to the car being quick, when it clearly is not. Ie. phat exhausts on a N/A car, fake intercoolers etc etc