An old joke about asking the time, remember to come in.

On the train, a young man asked an old man, "Excuse me, what time is it?"

The old man replied, "I won't tell you the time now." If I tell you, you will talk to me, you will treat me to coffee after getting off the bus, and I will invite you to my home. When you visit my home, you will meet my beautiful daughter, you will fall in love with her, she will fall in love with you, and then you will get married. I will never marry my daughter to someone who can't even afford a watch, so I can never tell you what time it is. "