On Mon, 28 Feb 2005, Mike Romain wrote:

> Last time I looked 'backfiring out the exhaust' was a real term

No such thing as "backfiring out the exhaust". But don't feel bad, people
say and write stupid **** all the time, including wherever it was you
looked.

> I have never heard anyone ever refer to it as a 'muffler explosion'.

Guess you're looking in the wrong places.