on top of the world, to be

on top of the world, to be

To feel elated; to be extremely successful. This metaphor for the peak of well-being dates from the early twentieth century. P. G. Wodehouse used it in Very Good, Jeeves! (1930): “If ever a bird [fellow] was sitting on top of the world, that bird was Bingo.”
See also: of, on, top
The Dictionary of Clichés by Christine Ammer
See also:
  • come on board
  • bottle up feelings, to
  • for the birds, it's/that's
  • awesome!
  • all-time high (low)
  • how many angels can dance on the head of a pin
  • egg in your beer, what do you want?
  • a good voice to beg bacon
  • bacon
  • what do you know, (well)