In a car that is equipped with some sort of forced induction system ,such as a turbo or a supercharger, a blow-off valve is usually availible as an aftermarket part to release excess pressure (boost) from the turbine system. Makes a very distinct noise. Like - pssssshhhhhhhhh! Or somtimes a chirping noise depending on the blow-off valve. Usually replaces a stock part usually refered to as a by-pass valve.
1. Gil: Whoah, dude! Did you hear that car go by?
Willy: Yeah, it sounded like it had a blow-off valve.
Willy: Yeah, it sounded like it had a blow-off valve.
by Wilburt April 28, 2006
P1: Hey, did you see this text from Brandy? She said she got arrested for offering to blow off a cop.
P2: Damn, that's wild!
P2: Damn, that's wild!
by Johnny Bog October 20, 2018
the nasty farts you rip when you've gotta take a dump. smells worse because the fart is passing over the turd lodged in your ass. also known as an "omen fart."
i knew we'd have to pull off at the next rest stop, because shauna had been blowing off a log for the last five miles and i had to roll down the window.
by gulliblezine February 5, 2009
The act you perform when you blow off your homies for a hot ass chick when deep down your homies are being jealous of you cause you're kickin it with the girl they want which in conclusion. Its a justifiable blow off
Andy: so they are definitely mad I pulled a justifiable blow off, but I really don't give a fuck
Kevin: hey, its all good, gotta blow off the homies every now and then for a chick
Andy:oh, it was definitely worth it!!!
Kevin: hey, its all good, gotta blow off the homies every now and then for a chick
Andy:oh, it was definitely worth it!!!
by Ya Boy Trax August 9, 2010
after 3 days of her waiting for him, he got blue-balls from the Blow Off-philia from the long erotic wait
by Fijjuggsgjijhhyggggg-about it May 28, 2019
by Tom February 29, 2004
by lord_almighty May 25, 2008