The Minister of Health is being shown around a new hospital. Towards the end of his visit, he is shown into a ward with a number of people with no obvious signs of injury. He goes to greet the first patient and the chap replies:

"O wad some Power the gift tae gie us
 To see oursels as ithers see us!"

The Minister, somewhat confused, goes to the next patient and greets them.
The patient replies:  

"The rank is but the guinea’s stamp,
 The man ’s the gowd for a’ that."

Then the third patient growls at him:

"Wee sleekit, cow'rin, tim'rous beastie,
 O, what a panic's in thy breastie!"

The Minister turns to the doctor accompanying him and asks "Is this a mental ward?"  

"No, sir" replies the doctor, "It's the Burns unit".