Just a funny example from two days ago. Indy, IMPs, opps are vuln, we are not. LHO deals and passes, partner passes, RHO bids 1C. My hand is:
AKJ10
AQ7
KQ6
963
I double with the intention to bid NT, or cue-bid in clubs after partner bids some suit. LHO bids 1H though, which is passed to me. I didn't know what to do, so I doubled again. LHO passes, partner goes to 1NT. I figure him with a Kxx in hearts, and nothing else, so I pass. Partner had:
98
K108
A832
A1075
Instead of arguing with my partner, I congratulated RHO who opened 1C in the worst vulns with:
Q653
652
754
J42
Partner was apalled though, and called the TD.
Petko