I've run into a few other Blues Rules. I'm not saying that I agree with them or like them, but I can't argue with them. It's the way of the Blues.
20. Blues lyrics refer to concrete events, realistic scenarios, and tangible objects. Lyrics containing the following subjects are, by definition, not blues-worthy:
a. Theoretical Physics
b. Dragons and/or wizards
c. Unicorns, pixies, leprechauns, or any other magical creatures
d. Benevolent Government
e. Philosophy (unless referring to a Philosophy of the Blues)
f. Time Travel (see Theoretical Physics)
21. Blues vocals must be sung with passion, raw emotion, and a throat that sounds like you've been gargling a mixture of broken glass, gravel, and sulfuric acid. Blues vocals should work up to a fever pitch to sound as though they are one split second away from a violent and unbelievably gory meltdown. The Blues are never sung in falsetto or while performing choreography. Typically, the Blues are also never performed while wearing a tutu, playing a vuvuzela (which gives others the blues), or developing your calligraphy skills. While these last few restrictions do not usually require rigid enforcement, they are still widely accepted.
22. Blues songs frequently feature a description of events surrounding an unpleasant or unfortunate circumstance. Not all circumstances, however, will elicit the same degree of empathy or support from the audience. Situations which should probably be avoided when writing Blues may include:
a. Minor Paper Cut
b. A General Sense of Disquiet
c. Not enough Likes on your Facebook Post
d. Looking like a Newb
e. Getting slightly sub-par gas mileage
f. Realizing that while life may have had difficult moments, ultimately each of us is responsible for our choices and that the freedom to make those choices is coupled with the acceptance of the associated consequences.
23. Blues music is not typically dance music. If one is moved to dance to a Blues song, one must do so in an extemporaneous manner, with wild abandon and feeling. Synchronized moves are not allowed. Line dancing is right out. Falling down is an important part of dancing to the Blues. Falling off of the stage is common, especially for bassists (even though they do not dance).