McLaren MP4 12Cs don't come cheap, and bespoke Akrapovic exhausts must cost oodles. But if you can afford both a 12C and an Akrapovic exhaust don't do what this dangleberry did - rev the nuts off it, spurred on by an appreciative audience, until the bumper melts.
Oops. That's going to cost a fair whack.
Check out our McLaren 650S Spider review