One of my office-manager-type-duties is to post the annual worker's compensation notice. This notice says, right on it, that it must be posted and maintained conspicuously in the workplace. We post it on the inside of a storage cabinet.
It is a cabinet used by everyone who works for the firm, so we are actually complying with the spirit of the regulation, if not the letter. Still, every year I get a chuckle out of conspicuously posting something behind a closed door.
This evening, I realized that in fact I observe the letter of the regulation as well - I am certainly being conspicuous about my posting and maintaining, when I can't stop giggling as I do it. It's hard to miss that.