On the short flight between Melbourne to Sydney, a young Jewish man found he had been seated next to a middle-aged Jewish man, and when realized that he'd forgotten his watch, he turned to the man seated next to him and asked him what was the time.
The man sniffed, adjusted his kippa, and continued to read his newspaper -- and thus ignored the man and his question for the remainder of the flight.
As the plane touched down in Sydney, the middle-aged man turns to the younger man and says, "It's 3:20 pm."
"Thanks," the younger man replies, "but tell me please, why wouldn't you answer me before?"
"Well, you know how things are. We would have started talking, and because we're both Jewish, I'd be obligated to invite you for dinner, and I happen to have a very pretty young daughter, and you could fall in love and get married... and frankly, I don't want a son-in-law who can't even afford to buy a watch!"