Answer:
This dish is hot frankfurter served in a long, soft roll and typically topped with various condiments. Often served with hamburgers.
What goes up but never goes down?
It's in your hand though you cannot feel it. Only you and time can reveal it.
It has the biggest wall and is also used when drinking tea.
What has a head, a tail, is brown, and has no legs?
When is it bad luck to see a black cat?