There are alot of sleeper cars out there that aren't rice, aren't muscle - Take what I'm looking at right now for example -
'98 Ford Contour SVT
Runs ~15.3 in the 1/4, but its a 4 door sedan with leather, cd, moonroof. Fast enough to beat the girlies in their 6cyl mustangs and cameros, but still a family car.
Alot of people get extremely biased and it creates the animosity we see. Personally, I've seen Civics completely stomp everything at dragstrips and I've seen Mustangs do the same. As for rice, Its a completely legit term but it doesn't apply to SI's, Preludes or any factory variant of import cars that is sporty. It applies to a kid sticking a shogon body kit to his brand new Civic DX.
Again, just my 2cents.