Not funny at all, just basic 5S

The point is not to state the obvious, point is to fix the place for trash can, so someone wouldn't store who knows what else in there or misplace the trash can somewhere else. In certain types of production environment it makes a lot of sense, everything gets labeled like that down to individual tools. Everything gets it's one specific place and if something is out of place it has to be cleaned up.

5S however frequently shows up in buzzword bingo. The methodology often gets badly implemented so that it brings no value, or worse, implemented in a place where it makes no sense at all. When in doubt, don't do it. And if you do implement it, don't just blindly follow the formula, adapt it to your actual needs so that it makes sense in your work environment.