[TUHS] EOF on pipes?

[Doug McIlroy]

>> pipe, ch(e)root.... Any more unix connections to smoking?

I have a slide that's a quadralingual pun (French, English, Art, shell)
in which Magritte's painting of a pipe with the words "Ceci n'est pas
une pipe" has been altered to read "Ceci n'est pas une |". The
altered phrase was borrowed from Jay Misra et al, who used it as
an example of a message in a paper on communicating processes.