- Thou shalt not bleach thine pants.
No matter if they are your good m&s ones, and even if they are quite new and only a little bit grey. Thou shalt invoke the wrath of thine fanjo 
no matter how well thou thinkest they have been rinsed.
Please add your own Housekeeping Commandments, borne out of bitter experience, as a checklist for those of us hard of brain cell. And so I don't feel quite so alone in my idiocy.