What kind of irony is this ?
1. A mean old man ate a large meal at a restaurant. The waitress tried to provide him with excellent
service, but every time she brought him a dish, he complained. First he thought that the soup was too
cold when it was hot. Then he said that his steak was dry and chewy, when it was moist and succulent.
Then he complained that one of her blonde hairs was in his mashed potatoes, but the hair was actually
grey like his own. She remained patient and continued to try to help him until the end of the meal, when
he left her a quarter for a tip. She replied on his way out, "Thank you for the generous tip, Mister."
Which type of irony is used?