Cy the Cynic admits to being a connoisseur of attractive women. Still, I've heard him say that he who looketh upon a woman denteth a fender.
Keeping your mind on the game is a key to success at bridge. When Cy was declarer at today's four spades, the defense took two diamonds and led a third diamond, and Cy ruffed and cashed the ace of trumps.
When West discarded, the Cynic scowled, took the king of trumps, cashed the king of hearts and finessed with his jack. West won, and East got the queen of trumps. Down one.
Cy lost his focus, and since no attractive women were around (he was playing against me and Unlucky Louie), he had no excuse. He should lead a trump to the king at Trick Four.
If East discarded, Cy's contract would still be safe. Cy could take the ace of trumps and the K-A of clubs and ruff dummy's last club. He would then exit with a trump, and West would be end-played: He would have to lead a heart from the queen or concede a ruff-sluff.
You hold: A J 10 6 4 3 T A J 4 7 3 K 6. You open one spade, your partner responds two hearts, you rebid two spades and he tries three clubs. What do you say?
A: Since partner's response promised a five-card or longer heart suit, you might have raised to three hearts at your second turn. To rebid your six-card suit instead was not a mistake, and if you jump to four hearts now, you'll have described your hand reasonably well.

North dealer
N-S vulnerable

K 9 5 2
T K 6 2
K 8 4
A 9 4
None Q 8 7
T Q 10 7 3 T 9 8 5
J 10 9 5 2 A Q 6
J 8 5 2 Q 10 7 3
A J 10 6 4 3
T A J 4
7 3
K 6

North East South West
1 Pass 1 Pass
2 Pass 4 All Pass
Opening lead - J