Have you noticed whether, when descending a staircase, you make a slinkety sound? That would be a marvelous thing.
Not noticed so, although people do occasionally sing the Slinky song when I do! And I tend to stop two stairs from the bottom to cries of disappointment.
Well, if your friend's really love you, perhaps your new nick name could simply be "a marvelous thing."
Also, I am glowing with pride over my new title.