Normally when you see a Do Not Disturb sign you just barge right in anyway, right? But these signs are more entertaining than anything happening behind the closed door. This is a fair trade. Why should I listen to a bossy sign, anyway? Unless it has something to offer in exchange? Like maybe a laugh or two? I’ll “Do Not Disturb” if you can make me chuckle. Unless of course you find it disturbing to have a man laughing just outside the door. In which case you’re screwed either way I guess.