An English man, a Scottish man, and an Irish man are all at work on a bridge.
They stop for a lunch break, and they all have different sandwiches. The English man has roast beef. The Scottish man has peanut butter and jelly. The Irish man has turkey.
"If I get (x kind of sandwich) again tomorrow, I'm jumping off this bridge."
The next day, they eat their lunches, and they have the same kinds of sandwiches as yesterday. True to their word, they jump off the bridge.
At the three men's funerals, the wives of the English and Scottish men say,
"I don't know why they couldn't tell us they didn't like our sandwiches."
The wife of the Irish man exclaims,
"I don't know why my husband jumped off that bridge, he makes his own lunches."