I’ve posted this story in various guises before, but back in the '90s a friend of mine had a dedicated phone line for his modem (yes, this was before residential broadband of any stripe was readily accessible) which was the inverse of the local Dominos Pizza. Like, ###-###-0101 vs ###-###-1010.

Tons of calls from a wide cross section confused, stupid, angry, and belligerent would-be pizza seekers arrived at the telephone he had plugged into that line, and many many more must have gone into the black hole of the perpetual busy signal.