Muffler fuck Share definition Flag Verb; The act of ramming your vehicle into the rear end of another vehicle at a considerable speed. -"Damn, that guy was going pretty fast when he hit you"-"Yeah, he muffler fucked me pretty bad" Muffler fuck by Whiskie December 1, 2009 0 0 Get merch Get the Muffler fuck mug. Buy Now — $32.95 See more merch