9. Foaming angry
This roommate was so deceitful and devilish that we had to look at it twice, just to understand what was going on. In fact, this was a multi-purpose trick that will allow you to return to someone without too much effort in many situations – provided he does not use liquid detergents.
For this prank you only need a bottle of clear nail polish and the most-used soap from your roommate. Dab the essentials carefully to remove another person's special soap serving until completely covered voilà! The soap, which never gets foam, quickly drives her crazy. They simply can not become more passive-aggressive.