Hey, chill.

Here's the etymology as I understand it:
"Rice-Rocket" originally referred to a Japanese motorcycle - which BTW had much more performance than, for example, a typical Harley of the day so it really wasn't a pejorative. Crotch-rocket is also a descriptive term for the same thing, which I like and use now that there are many makes of fast roadbikes from many countries.
So, I assume Ricer is a bastardization of the original term ........
Oh, and I think the car looks nice, too. Definitely different, but nice.