Sarcastic term used for any toxic compound, often spoken in an anxious/alarmed tone of voice to indicate the speaker's horror or distress at even the thought/possibility of said chemical being used, and implying to any listeners that he fears that the use of said chemical might very likely necessitate calling 911.
Homeowner: Now, wait a sec --- I got toddlers and pets, remember! Youโre not gonna use some kinda dangerous 9,1,1-Trichloroethane-crap on my floor, are you?
Carpet-cleaning service guy: Oh, no, Ma'am --- this is all environmentally-friendly detergent --- 100% natural and biodegradable ingredients.
Trucker speak. Should only be used to introduce yourself on channel 19 on Citizen's Band. For other channels, say "break 20", "break 21", etc. It's funny to hear people say break 1-9 on like channel 5 though.