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It is of the utmost importance that a warning sign be easily
understood. A cryptic warning sign will do nothing to improve the safety
of a dangerous workplace, and will be little more than a whimsical
diversion to an employee before his arm is torn from its socket by the
series of large, rusty cogs whose existence the nonsensical warning
sign was incapable of alerting him to.

So in light of this man's alarming mutilation, I present to you 20
warning signs whose meanings are completely beyond my capacity to
discern.

IT SEEMS THAT YOU ARE BULLETPROOF

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QUIET DOWN YOU STICKMEN NO HORSEPLAY ON THE COUCH

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FISHES CANT CLIMB STAIRS THIS IS CRAZY

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TO WHAT DO WE OWE THIS MADNESS

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WHOA WHOA WHOAAAAA!

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ENIGMATIC JUBILATION

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NO RUMMAGING

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MIGHT AS WELL DO IT EVERYONE HATES YOU

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OF SERIAL KILLERS & STAIRWELLS

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PRAISE THE LORD FOR THIS APPARENT MIRACLE

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MAN EVERYTHING FUN IS OFF LIMITS

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CAUTION: PLANES EMIT SOUNDS

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DO NOT FROLIC IN SINGULARITY BOX

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TAKE HEED: TRACTORS

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YAGGIDA-YAGGIDA-YAGGIDA!

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JUST A REMINDER OF THE EXISTENCE OF TRAFFIC

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...AND WITH GREAT SPEED

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DUMPING FILTH FROM A SCAFFOLD? PROHIBITED!

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DO NOT TROUBLE FARMERS WITH UNREQUESTED ACROBATICS

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RHAPSODY IN AUGUST

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Images Courtesy of Stick
Figures in Peril