February 22nd, 2010 by 
Si Senor Restaurant Beaverton, Oregon
3 such signs are placed in reasonably close proximity on the walls of the restaurant facing the customers. They are as subtle as a patron publicly experiencing gastrointestinal discomfort and have exactly the same effect on all in the vicinity. Penny smart, chip foolish?
Haven’t been there in a while. Doesn’t look like I’ll be going either…