How many times has it happened with you that you tried to make a funny joke or a statement and it turned out to be true. For instance you enter a home and smell something weird and just unknowingly you say - "God, what died in here?" and suddenly you find out that the house pet died and the thing that you just said wasn't funny at all.

Well this is not that kind of serious story but the theme is same. A guy was helping a girl carry her bags. since they were a bit heavy he joked - "Hey what are you carrying in these? Rocks?" and before he could make her laugh she just answered back yes because I am a GEOLOGIST. Hahaahahahahhahahahaha