A few years ago at a National, I received this ruling: RHO opened 1NT, I overcalled 2D (one major) alerted by partner, and LHO bid 4D (clearly intended as Texas, but neither announced nor alerted by opener).
Opener raised to 5D, responder bid 5H, and opener, looking confused, jumped to ...
We play "Lose My Mind" doubles. If the preemptor doubles in this auction, it says, " I want to save unless you want to play this doubled." Partner either saves or passes to convert to penalty. It's not perfect, but at least both partners are involved.
We beat 4H two on a low diamond lead. Win Q - back to A - diamond ruff, club to ace, diamond ruff, overruff, but spade trick to follow. Declarer should have risen on the diamond because my partner opened the East hand. Then, declarer eventually makes 4H on a spade-diamond squeeze.