Inspired by Ubuntu, see announcement here
One interesting feature:
Another important feature is the PANIC mode (also called
the WIFE mode), which will immediately hide anything
incriminating from the filesystem and memory when the
user hits a certain key combination. "Since this is a
kernel-level feature," Hefner said, "It can fool commands
like df into thinking that the /usr/porn folder is
actually /usr/lib. Until you enter the right password,
absolutely all traces of you-know-what will be
invisible."