Three guys that all worked bulding high rise buildings sat down to lunch one day. The first one opens his lunch and says, “Tunafish, tunafish, I hate tunafish. If I get tuna fish one more time I’m jumping.”
The other two guys open their lunches and say the same thing.

The next day the first guy opens his lunch and says, “Ah, ham and cheese.”

The next two open their lunches and say, “Tunafish, tunafish, I hate tunafish. If I get tunafish one more time I’m going to jump.”

The third day the first two guys open their lunches and both got their favorite sandwiches. The third guy opens his lunch and says, “Tunafish, tunafish, I hate tunafish. All right, that’s it. I’m jumping.” So he goes to the edge and jumps off.

The other two look on not beliving what just happened. After a while the first guy says, “Gee, that’s sad. He actually jumped.”

The second guy says, “Yeah, the worst part is that he packed his own lunch.”