While at the funeral of her own mother, she met a guy whom she did not know. She thought this guy was amazing, so much the dream guy that she was searching for that she fell in love with him immediately.

However, she never asked for his name or number and afterward could not find anyone who knew who he was.

A few days later the girl killed her own sister.

Question: Why did she kill her sister?

First, find your own answer to this question.

Then, check out below for the answer.

Answer: She reasoned that if the guy appeared at her mother's funeral, then he might appear another family funeral.

If you answered this correctly, you think like a psychopath. This was a test by a famous American psychologist used to test if one has the same mentality as a killer. Many arrested serial killers took part in this test and answered correctly.

NOTE: This is not a true test, according to Snopes. "As a quick 'n' easy way to separate the sheep from the murderous goats, it wouldn't work."