Perrin exhaust with added benefit of melted plastic
 

Ran over a F*c*ing trash bag the other day I-285 in atlanta and low and behold it melted to my exhaust.

I'm thinking while its "warm" get a rag soaked in gasoline and just rub the heck out of it?

Paint scraper to get the bulk of it off and a wire brush to get the remainder of it. You'll probably smell burning plastic for a while.

The vapor will not be very pleasant. Try elbow grease it's safer.

This. Same thing happened to my last car. I scraped to the best of my ability but it still smelled like birthday candles for the next 500 miles.