1. Having a tatoo that could be interpreted as a symbol of "rival" organization and having big brothers discover it. Then have them gently scape it off (bit by bit) each night till it is beyond recognition with a metal brush.
2. Get tortured so bad that you literally hop inside a campus police car pleading for help. Officer smiles and reveals tatoo showing he is a member of the organization you are getting initiated into, so you have no choice but to dash back out of the car and run for your life.
These were two separate incidents from different organizations.