Source : Webster's Revised Unabridged Dictionary (1913)

Whapper \Whap"per\, Whopper \Whop"per\, n. [See {Whap}.]
   Something uncommonly large of the kind; something
   astonishing; -- applied especially to a bold lie. [Colloq.]

Whopper \Whop"per\, n. [Cf. {Whapper}.]

Source : WordNet®

whopper
     n 1: a gross untruth; a blatant lie [syn: {walloper}]
     2: something especially big or impressive of its kind [syn: {whacker}]

Source : Free On-Line Dictionary of Computing

Whopper
     
        {WarGames}