An old man went to the college that he went to when he was a youth. He knocked on room number 3 of the hostel and said: "May I come in. I lived in this very room thirty years ago when I studied in this college". A young man opened the door and let him in. The old man examined the room, fondly...

An old man went to the college that he went to when he was a youth. He knocked on room number 3 of the hostel and said:
"May I come in. I lived in this very room thirty years ago when I studied in this college".
A young man opened the door and let him in.
The old man examined the room, fondly remembering everything.
He said, "The same old room, the same old wooden table, the ventilator and the same old window that opens to the garden. And the same old bed."
When examining it he found a young girl under the bed.
The young man got alarmed and said, "Don't mistake me. She is my sister. She dropped her ear ring and is searching for it."
The old man said, "And the same old story..."