It seems that "nuclear option" has become such an effective Democratic slur that congressional Republicans just can't help saying it themselves. In fact, the GOP leadership on the Hill has to send out specific instructions to their members to stop using the phrase.

In this talking points memo, circulated today by the Republican leadership in the House, #1 of the "Top Five Message Points" is "1. Do not refer to the "nuclear option" -- it should be called the constitutional option."

You can see the document here.