There's an old LCM (Living Computer Museum, RIP) video where they run off a card deck of a risque ASCII art program on an IBM mainframe's line printer. It feign

There's an old LCM (Living Computer Museum, RIP) video where they run off a card deck of a risque ASCII art program on an IBM mainframe's line printer. It feigns a printer fault after printing the subject down to the shoulders, only to finish the print suddenly (line printers are fast!) when the operator has gone over to the printer. IIRC the original livestream was unprepared for that :P