¡Cuelga tu Droid!
Just a simple application which can hang your phone when superuser access or root access is granted.
Recovery
Removable-Battery Devices
Just remove the battery and re-insert it
Non-Removable-Battery Devices
Press and hold the power button until the device shuts down/reboots
Application is open-source : https://github.com/ExploiTR/AndroPause/
Check out Terms And Conditions: https://github.com/ExploiTR/AndroPause/blob/master/tos.md