This was middle/high school for me. We were kids and we wanted to break things :) We'd use the debugger to bypass parental controls, edit files to change our MathBlaster scores, poke around apps with ResEdit, etc.
Yeah, we sometimes left the computers in various states of brokenness... but damned if it wasn't educational :) Our teachers eventually caught on, and rather than punishing us, they made us all lab assistants and gave us extra time after school to do LAN parties.
