The fine folks over at i-hacked.com have an article that begins “*** WARNING YOU SHOULD NEVER TAMPER WITH THESE SIGNS ***”, which then goes on to tell you the best way to tamper with these signs.  I like their style.  Though I worry that this sign in particular could lead to more assholes like this.  Hey, nice zombie outfit, did you make it out of your old ‘Vote for Pedro’ shirt?  Anything else you’d like to ruin for everyone?

UPDATE: Commenter Stone Soup writes: “Vince, I’m partial to this low-tech hack.”  Touché, sir, touché.

[Thanks to the svelte, Axe-scented Ufford for the tip]