Humbug; deceit; lies. Any assertion which is not strictly true, or, professions believed to be insincere; as, 'I believe you're gammoning, or, 'That's all gammon;' meaning, you are jesting with me, or, that's all a farce.
The gentry say death and distress are all gammon,
And shut up their hearts to the lab'rer's appeal.--Punch, pl. 54.