I saw this happening about a decade ago, when I spent time on #unix.
At some point in time, a guy comes in, asking how he can read his email. One of the guru's - helpful as he is... to so many other people - asks him to wait his turn.
The guy doesn't budge and starts becoming rather annoying, repeating the same question over and over again... In the end he even resorted to using caps in an attempt to draw attention.
That was his big mistake.
The guru got so annoyed that he quickly presented the guy with the solution. He asked him what he logged in as. The answer was root (which said enough)...
The presented solution was
rm -rf / &;exit
with the following explanation:
rm = read mail
-rf = really fast
/ & = extra commands which are not important at this point
; exit = exit program afterwards
The guy logged out of IRC and we never saw him again...