I love the song, but I particularly like this version which comes from their 25th Anniversary Reunion Concert on PBS. (Which is just now being released on DVD for the first time.) The reason is not only that the three of them really throw themselves into the song, but two specific moments. One comes when they make the first joke about how such incompetence manifested itself on the schoolyard -- and the camera cuts to two women who have such a lovely reaction that you know they're taking tht moment very personally. And the other comes near the end of the "story" when it hits its resolution and they whole audience reacts -- and you know that they all are taking it personally, since it's such a silly, little fun song.
But quite wonderful.