whiffled, adj. — Green’s Dictionary of Slang

whiffled adj.

[? SE whiffle, to move lightly as if blown by a puff of air]

drunk.

1921		Wodehouse Indiscretions of Archie Ch. viii: I’ve seen the dear old chap many a time whiffled to the eyebrows, and looking as sober as a bishop.
1930		Wodehouse Very Good, Jeeves! 46: ‘Have you forgotten that I did thirty days [...] for punching a policeman [...] on Boat-Race night?’ ‘But you were whiffled at the time.’.