A good Irish joke!?

Paddy Irishman, Paddy Englishman, Paddy Scotsman and Paddy American were all on a hot air balloon with a pilot. Suddenly, the pilot cried 'We're too heavy, we need to get rid of some wieight or crash!. Paddy American stepped up, said 'This is for America!' and jumped off. 'We're still too heavy!' said the pilot. So up stepped Paddy Scotsman. 'This is for Scotland!' he cried as he threw himself down. 'We're STILL too heavy' exclaimed the pilot in despair. So up stepped the brave Paddy Irishman, tears in his eyes as he advanced to the edge. 'THIS IS FOR IRELAND!' he yelled - and pushed the Englsihman over the edge!