a man finished his meal at a restaurant and left his tip: three pennies.
As he walked out, his waitress mumbled, loud enough for him to hear, "You can tell a lot about a man by the tip he leaves."
The man spun around, and asked, "Really? What exactly does my tip say to you?"
"Well," she replied, "this first penny says you're a thrifty man."
Barely concealing his pride, the man said, "True enough."
She continued, "And this second penny tells me you're a bachelor."
Surprised, he said, "Well, yes, I am."
"And this third penny tells me that your father was, too!"
I had to think about that one, I get it now