I think I have heard quite a bit on this. The hon. opposition House leader has been in the Speaker position before, so I know he is well aware of the following:
In dealing with unparliamentary language, the Speaker takes into account the tone, manner and intention of the Member speaking, the person to whom the words at issue were directed, the degree of provocation, and most important, whether or not the remarks created disorder in the Chamber. Thus, language deemed unparliamentary one day may not necessarily be deemed unparliamentary on another day. The codification of unparliamentary language has proven impractical as it is the context in which words or phrases are used that the Chair must consider when deciding whether or not they should be withdrawn.
Given the fact that the hon. Speaker has already ruled on this, it is not a matter that I am prepared to continue to entertain.