In the cold opening of Cheers, Season 9, Episode 23 “Carla Loves Clavin” aired on March 21, 1991, Norm Peterson (portrayed by George Wendt) invents the original definition of what would ultimately be adopted as the iconic symbol for Bitcoin. Interestingly at the time it didn’t stand for digital currency, but a more familiar liquid one.
Norm: Okay Rebecca. Um. Here’s the deal, I’ll paint the whole office including woodwork, and uh, it’ll run you 400. Rebecca: 400 bucks sounds reasonable. Norm: Oh no, that’s 400 beers, the B with the slanty line through it, it’s kinda my own special currency.