Vandalism
The police thought that he was a criminal. Property owners felt that he was menace. But Noodles considered himself an artist. He painted huge murals with his spray cans. Noodles' artwork was everywhere. His name blazed on water towers, billboards, overpasses, and anything else that he could reach. One day, Noodles painted his name in big block letters over the window of the local grocery store. When the storeowner arrived the next day, as he attempted to remove the paint, he was heard to utter, "Oh! Thank you. How nice of you, Noodles, to paint your name over my store window like that. I really appreciate it." He never got to thank Noodles personally, though he often wished that he had.

what type of irony is it and why