Climax /(?)/

Cli·max

Climax

n.
  1. Upward movement; steady increase; gradation; ascent.
  2. A figure in which the parts of a sentence or paragraph are so arranged that each succeeding one rises above its predecessor in impressiveness. (Rhet.)
    “Tribulation worketh patience, patience experience, and experience hope” -- a happy climax.
    — J. D. Forbes.
  3. The highest point; the greatest degree.
    We must look higher for the climax of earthly good.

Phrases & Compounds
To cap the climax
to surpass everything, as in excellence or in absurdity.