David-Paul Sip
Obiter Dictum
[Latin, By the way.] Words of an opinion entirely unnecessary for the decision of the case. A remark made or opinion expressed by a judge in a decision upon a cause, "by the way", that is, incidentally or collaterally, and not directly upon the question before the court or upon a point not necessarily involved in the determination of the cause, or introduced by way of illustration, or analogy or argument. SUCH ARE NOT BINDING AS PRECEDENT. :P
http://legal-dictionary.thefreedictionary.com/Obiter+Dictum