Parachuting 

An Englishman, and Irish man, an Australian, and a New Zealander all went parachuting for the first time. 

The Englishman's jump was spectacular. He leaped out of the plane yelling: "I am doing this for my country!" The Irishman's jump was just as spectacular as he tell the same words. 

Then the New Zealander ripped the Australians parachute off and pushed him out of the plane yelling: "I am doing this for my country...!"