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1.
An exhaust system that allows the exhaust gas to exit, while reducing back pressure. They use larger diameter
pipe than standard pipes.
"I just put catbacks on my Mustang, it's going to beast ass on all those civics and 'yotas out there."
作者 DKbikes 2007年10月27日
 
2.
large tip to an exhaust to release pressure build up from the car's gas.
The new catback i got for my tC will rape the other guy's mustang who also defined catback
作者 tCDanny 2009年12月22日
 
3.
Another term for Vagina, refering to intercourse.
Son- Man dad, I'm so bored.

Dad- Well get your ass out of the house and go get you some cat back.
作者 Marshal Clark 2008年3月12日