👉 The slang word for "800 30" is "Dangg." It refers to a number that isn't used because they don't fit into the number system we're familiar with.
Example sentence: "I'm feeling a bit danged, 800 30, but I'll take it if you can fix my car for free." This sentence is edgy and unsettling because it's a play on words where "danged" literally means being angry or upset, which isn't a common expression in everyday conversation. It also includes a dig at the fact that "800 30," when used as a phone number, doesn't fit into our normal system of communication.