I love the very idea of this sign on the men's room door, which claims to know who's doing the smoking. But if you know who's doing the smoking, why hang the sign when you could just give the offender a knock to the noggin?
And why put the quotation marks around "No?" And phrase the rule as a prediction?
A miracle of graphic design and communications...but, I swear to God, the crepes, schnitzel, and perogies kick ass!