No blinking
No referring to a woman as a female - she is a person
No referring to a man as a male - he is a person
No facial expressions indicating entertainment or disapproval of any nature
No vocal implications citing satisfaction or dissatisfaction of a particular topic
No "abbreviations" referring to a persons nationality
No remarks of a personality/appearance-specific nature (not saying what but you get the idea..)
No remarks of a human nature (you earthling, you person etc)
Stiff upper lip at all times
No haircuts that signify independence
No slouching
and lastly - if you work in a call centre or an office with no windows - no outwardly expressions of emotion.
Have i missed any?