Two questions characterize ACL 4.2: "What's next?" and "What day is it?" They are apt to interrupt others and demand assistance / answers now.
All cultures have word taboos; the taboos are usually followed within ACL 4.2. When the taboo is broken, it is probably done knowingly.
Universal Social Customs
Universal social interaction rules may be programed into the DNA. It is certainly fascinating to find the following rules in many different cultures and entering the scale within ACL 4.2.