Back in the late 80s when my dad was much more involved in Labour and trade union politics he once listened to another party member hold forth for several minutes about something "disgraceful" that Paul Boateng had said, before pointing out that it had actually been said by Bernie Grant.

"oh right," the moderately senior local politician said dismissively "the other one" And you know, despite my dad asking several times, he never did clarify the other what.