Using a padlock on something and think it is secure? Think again!
This video demonstrates the method on one type of lock. The idea is to make a tension wrench out of one half of the paper clip and use the other half to jiggle the lock open. Of course this is much more easily said than done, and if you haven’t picked a lock before you should probably learn how before trying this more advanced method, but it is possible and a good way to do it when all you’ve got is a standard paperclip.