Irish man drops his watch

There's an Irish man,an English man, And a Scottish man, and they're all standing on top of a building.

The English bloke turns around and says to the men, "I bet you I can drop my watch, run down and catch it!"

The men says, "Yeah right!" So he drops his watch, runs down the building and misses it.

The Scottish man says, "Aye, I'll try it!" So he drops it, runs down and misses it.

The Irish meanwhile thinks, "Yeah alright then, I'll try it." He drops his watch, runs down, stops halfway, has a shower and a drink, runs down and catches it.

The Scottish and English men turn around and say, "How the hell did you do that?!"

He replies, "My watch was half an hour slower!"