This might just be the most meta sign mankind has ever created.
From Sweden; oddly mesmeric: "all posters except posters about posters being prohibited are prohibited" pic.twitter.com/HKQqPVo3Kb-- Stig Abell (@StigAbell) May 20, 2014
Just try and wrap your mind around the thought process that went into that sign without having a brain aneurism. Stig Abell's find of idiocy just one more discovery to add to the mix of "signs that have no purpose for existing."
Confusing signs make sense no.
It's probably best to just stand still with your eyes closed.