Grr
#rm -rf /*

or del tree /y (whatever you dos monkeys do nowadays)
(KaiserPro captain arse rape, Fri 3 Nov 2006, 13:33, archived)

These days?? doubt it
and u mean "deltree /y *.*"
command was removed in xp tho

/kills self.
( Dr-Mx Trying to be somewhere between an ape and a robot., Fri 3 Nov 2006, 17:14, archived)

But
rd /q /s c:\ works just as well in XP.
( flake keeps on trying 'til he runs out of cake, Sat 4 Nov 2006, 13:54, archived)