A riceboy's mum's car that is kitted with as much shite as you can stkc to a car without defying the laws of dynamics.
<sitting behind some compact car with a sub thumping so loud it rattles every panel>
Sheeet man...thats a buzzbox!
Any noisy small underpowered car, especially when you have the misfortune of being stuck behind it. Classic examples: 1962 Chevy Corvair, Ford Pinto (any year), pre-1972 Volkswagen.....
"Get that effing buzz box off the road!"