If there isn't a rule against it, you're not technically doing anything wrong.
Rule #2: (If there is a rule against it,)
Don't get caught. If you're never caught, there can be no problem with rule-breaking.
Rule #3: (If caught,)
Don't act guilty. If you proceed by subtly (not explicitly) asserting that you are, in fact, in the right, you can almost always make your accusor question his/her authority to persecute.
Following these rules, it is advisable to atone subtly for any offense in trivial, non-related ways. This convinces everyone of your good character.
