7 up babies

Four men were in the hospital waiting room because their wives are having babies. All of them were tensed and joyous simultaneously as the men couldn't wait to meet their babies. 

After a while, a nurse walked to the first guy and said, "Congratulations! You're the father of twins."

"That's odd," answers the surprised man. "I work for the Minnesota Twins!" He looks equally astonished and happy. 

Half an hour later another nurse came and informed the second guy that he had triplets. "Congratulations! You're the father of triplets!" she said. 

"That's weird," answers the second man. "I work for the 3M Company!"

Next, a nurse tells the third man, "Congratulations! You're the father of quadruplets!"

"That's strange," he answered. "I work for the Four Seasons Hotel!"

When four men were trying to figure out what was going on and what miracle it was, the last man started groaning and banging his head against the wall. "What's wrong?" One of them asked.

"I work for 7 up!"