rules are made to be broken

Rules are made to be broken is what some people say in order to make light of doing something bad as a way to rationalize that poor behavior and bad judgment is acceptable. This is usually said by someone who is trying to encourage others to do the same bad thing they are doing. By saying rules are made to be broken, they are saying that if the person making the rules didnt want it to be broken, they would never have made the rule in the first place.