Holding ♠Ax ♥QJ97x ♦Axx ♣AQx, I opened 1♥ (since we play 14-16 1NT) and over partner's 1♠ I rebid a conventional 2♣, either natural with clubs or any 16+ hand.
Partner responded 2♥ and I started thinking. Partner has shown less than 8 points, no heart support, probably does not have a decent 5-card minor (as he would bid 2NT rather than 2♥) and certainly does not have a 6-card minor. He does also not have six spades. So it looks like my good hand is getting worse by the minute and it's hard to see how game can be good so, especially being non-vulnerable, I am happy with just passing this.
Dummy hit with ♠Jxxxx ♥x ♦Qxxx ♣Kxx and when the diamond lead showed that all the honours lay over the ♦Q I was quite pleased with myself.
So it was a bit of a shock when, at trick six, I discovered that one of my diamonds was actually a heart. If I had noticed during the auction I would have raised to 3♥, but as I was actually going down at the two-level level (LHO holding ♥AKT8) things seemed to be working out just fine. And I hadn't revoked.
Naturally at the end I apologised but one opponent was not happy. He knew that his team mates would be a lot higher and go down, perhaps important in a tight 7-board match, but there is nothing to be done here. Just one of those accidents that worked out for us. Phew!
PS Thanks to Memphis MOJO for inspiring the title