A man is woken up in the middle of the night by his son screaming. He quickly goes and wakes him up.

Man: "Son What's the matter?"
Son: "Dad it was the scariest dream! A man dressed in black came and told me my aunt is going to die tomorrow!"
Man: "Son it was just a dream don't worry."
The next day he comes home and his wife is crying.
Man: "Honey what's wrong?"
Wife: "my mother called my sister just dropped dead!"
That night the man is woken again by his son screaming and he wakes him up.
Son: "Dad the man in black came to me again in my dream and said tomorrow my father is going to die!"
Man: "Son your aunt dying was just a coincidence don't worry about me I'll be fine."
The next day the man is freaked he doesn't take any elevators, doesn't walk over any grates and jumps at any noise.
When he get home his wife takes one look at him.
Wife: "Honey you look awful what is going on?"
Man "I have had the worst day ever I feel awful and just want to go to bed."
Wife: "You think you had a bad day? This afternoon the mailman dropped dead on the front porch!"