My favorite sign at the 2014 BCAPL Texas State 8-Ball Championships was this one:
Usually you just have to "go outside" with no restrictions. This meant all us non-smokers would have to walk through smokers to get to our cars or come inside.
So, I REALLY liked this sign - no smoking within 15 feet of the building. WOO HOO!
For non-smokers, this was pure awesomeness.