Asbestos Longjohns

/as-ˈbe-stəs lȯŋ-ˌjänz/

n. Notional garments often donned by USENET posters just before emitting a remark they expect will elicit flamage.

This is the most common of the asbestos coinages. Also 'asbestos underwear', 'asbestos overcoat', etc.