Rock hard
It looks like someone wanted to unleash some anger on public property, and instead of doing so, they found an outlet to their emotions in the form of art (well, sort of), with this stick-man letting out his rage on this no-entrance sign. Either way, this makes this warning sign more alarming, and it ensures no one misses it, don’t you think?
Whether this is an expression of anger, a rebellion against the system, a tribute to all rock bands out there (it’s not uncommon for rock stars to smash their guitars during concerts, after all) or something else entirely, this makes for a pretty funny stop sign. We know traffic laws aren’t meant to be funny, but who gets hurt by this?