Gilithin, on 2024-February-24, 08:41, said:
The cynic in me says that the best bid is "missing" the 4♥ call and "opening" a weak 2♠, getting partner barred from advancing and then correcting to 4♠. Obviously that's not what I would actually do but for the unethical, it is easy to use the social bridge stigma against calling in the TD and requesting a 27D adjustment.
Were you by any chance the player the other day who overcalled my partner's 1NT with 2♠ and then when I conceded (for once) an undo, promptly rebid 2♥ in perfect Canape ?