Triethylmethyldeath 

(tri-ethol-methol-death) A term used by firefighters, mostly of the older generation, to describe a hazardous container with an unknown substance in it or said hazardous material. The 'tri' means the 3 colors of the placard system. Ethyl and Methyl are groups of chemicals that are hazardous.

Train cars and tractor trailers are commen triethylmethyldeaths.

Triethylmethyldeath by thewhacker December 28, 2010