Unclear on the concept
A man goes on a vacation to Hackensack, New Jersey. While he's checking into a local motel, the clerk behind the desk looks at him and says, "I'll give you a room for free if you can answer this riddle: My mother and my father had a baby. It wasn’t my brother, and it wasn’t my sister. Who was it?"
The man thought and thought, but he couldn't come up with the answer. Finally, he gave up. The clerk smiled and said, "The answer is me."
The man was so impressed that he decided he would use that riddle back home to stump his own friends. He returned home and gathered his buddies at the local pub.
"Hey guys," he said, "I've got a riddle for you. My mother and my father had a baby. It wasn’t my brother, and it wasn’t my sister. Who was it?"
His friends scratched their heads, argued about it, and finally gave up. "We give up," they said. "Who was it?"
The man puffed out his chest and proudly announced, "It was the motel clerk in Hackensack!"