Once playing teams round-robin on the very last board of the last match I missed part's bid: LHO opened 1♠, and I, with the only desire to finish the game as soon as possible, saw the part's hand moving somewhere to "pass-side" of the bidding-box, RHO passed and I thinking "what a stupid contract we are going to play :P " also passed. To my surprise LHO passed again and only after that I noticed that my partner had actually doubled :P