These parents took family dysfunction to a whole new level. Not only did they open multiple credit cards in their 18-year-old son's name without telling him, but also the mother tried to brush it off by saying her mom did the same thing to her, as if this were some rite of passage when you become an adult. The Redditor discovered that he owed over $15,000 and, of course, his credit score completely plummeted. When he confronted his parents about the whole scheme, they had the audacity to give h…