There was an Englishman, a Scotsman and an Irishman working on the top of a cliff. The Englishman said, "If I have cheese in my sandwich tomorrow, I'll jump off this cliff."
The Scotsman said, "If I have jam in my sandwich tomorrow, I'll jump off the cliff."
The Irishman said, "If I have ham tomorrow, I'll jump off the cliff."
The next day, the Englishman had cheese, the Irishman had ham, and the Scotsman had jam. So they all jumped.
At the funerals, the wives of the Scotsman and Englishman said, "Why didn't they just tell us they didn't like their sandwiches?"
The Irish lady said, "I don't know why my husband jumped off the cliff. He made his own sandwiches."