Three guys are are getting tested to join a secret government agency. Their final test was that to see if they could kill without emotion. they were given guns and told they had to kill the person in the next room. The person in the next room were their wives and they weren't told that the guns were filled with blanks.

The first guy goes into the room, sees his wife and walks out saying, "I can't knowingly kill my wife."

The second guy goes into the room, sees his wife, and after a few minutes they hear a gunshot and he walks out of the room.

The third guys walks into the room, after a few seconds there is a gunshot, and 5 minutes later he walks out and says "The gun you gave me was full of blanks, so I had to use my hands."