Mr. Speaker, I think it is quite clear in citation 486 of Beauchesne's Sixth Edition, page 143, which states:
An expression which is deemed to be unparliamentary today does not necessarily have to be deemed unparliamentary next week.
Mr. Speaker will no doubt recall that this relates to a decision of the Speaker in 1955, which we all remember fondly.
In addition to that, there is another point that should be brought to the attention of the House. Once someone has said something unparliamentary, withdrawing from saying something unparliamentary cannot be substituted by saying something else unparliamentary. Withdrawing from making an unparliamentary statement has to be unequivocal. This is something that Speakers, yourself and your predecessors, have been saying for time immemorial.
With those two points, and with respect, the right hon. member is mistaken.