Daniel Lindemann, one of the newest guest of the show, introduced one that supposedly tested a person's inclination as a psychopath. The question was: "In a room inside a skyscraper, you witness a murder scene by chance. You coincidentally make eye contact with the murderer, but the murderer makes a sudden hand gesture. What kind of gesture is he making?"

MC Kim Gu Ra responded, "Is he saying, 'I know the password to your house?'" Then, Cha Eun Woo said, "The murderer is counting which floor I am on." Hearing Cha Eun Woo's response, Daniel Lindemann immediately said that the idol's response was the answer, and jokingly called the idol "a psychopath."

In addition to this quiz, they also talked about one's preferences in coffee. Daniel Lindemann explained, "People who drink Americanos are systematic and rational, while those who like lattes are soft and sociable."

What do you think of these results? Watch the clip above for their fun moment in the car! Meanwhile, 'Those Who Cross The Line' airs every Friday at 9:50 PM KST on MBC.