A bus station is where a bus stops...
A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station...

A man phones a mental hospital and asks the receptionist...
A man phones a mental hospital and asks the receptionist if there is anybody in room 27. She goes and checks, and comesback to the phone, telling him No, the room is empty. "Good," says the man. "That means I must have really escaped."