1 talking, speaking 19-.
2 telling lies 19. Compare whid etymology: Scots; origin obscure; Grose and Egan (1823) attest that the form whidding sense 1 as ‘Scotch cant’; collected by EMcC/PS; form whidden attested by SR; form whuddin attested by BS in TDITA note:
Form whuddin attested by Canadian Paul Pope (2013) which he defines as ‘talking’.