Rich saw this at the Hyatt in Cincinnati. Evidently overly dramatic people can use the stairs whenever. Rich adds the extra wrinkle that there were no stairs anywhere near the sign, so maybe "stairs" needs to be in quotes instead.
I don't usually post the following: newspaper headlines, personal email, craigslist postings, unprofessional websites. I also tend to not crosspost things from other blogs, since I have so much unique material waiting for me to get to it.
Things I see a lot: silica gel "do not eat"; hair dryer labels; inside the bus "do not drill"; Wal-mart sign about IDs; coffee machine with "2" cup sizes; employees must "wash hands".