in reply to Guess what it does ... and a challenge
This does it slowly and is one character shorter than the one you gave in your spoiler:
1x~sleep 9
Update: Btw one could try this (CAUTION! DON'T TYPE BLINDLY!):
but it doesn't work, becauseUpdate: On the other hand, this works, and is shorter than the first one:
(The first three characters are needed because otherwise the readpipe is called in void context so perl throws away what it reads right away.)$x=`yes`
Update: the following works too and is even shorter:
Update: and one more character shorter is:
Update: the following has the same length as the first one in this node, but is a slower than that:
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