metaquette
Rules on when it is or isn't appropriate to comment on someone else's manners or behavior. In other words, rules of etiquette for discussion of rules of etiquette, or meta etiquette (metaquette).
Alice: Did you notice how Chad was being super-polite to Dana, but he barely even said hi to Eric?
Bob: Yes, but since Chad is standing right next to you, I'm going to have to question your metaquette skills.