This is such an obvious and wonderful gag that we're kicking ourselves hard in the shins for not thinking of it.
Note: this will probably only make sense to people familiar with the increasingly archaic traditions of British television, where BBC channels used to hand over to pages from Ceefax when they shut down for the night. (Amazingly, you can sometimes still see Ceefax on regular BBC channels, according to Wikipedia at least.) Also: it works best at full screen.
via @robertpopper | Created by @EddieRobson, inspired by @MerseyMal