Good Unix pranks for kids?

['lesleyb']

On Tue, Sep 28, 2010 at 08:12:38PM +0200, Stefan Scheytt wrote:
> Hello fellow monglers,
> 
> Due to parental responsibility, we occasional use x11vnc to have a look at
> what episode of Hanna Montana our 9-year-old is watching on Youtube today.
> (Obviously, we ssh into her machine and sudo to run that program.)
> 
> Do you guys know any other fun pranks to play on an unwitting X user from
> a privileged command line?
> 
> I found xcowsay, but it doesn't seem to work right. Always bones out on the
> display issue.
> 
sudo apt-cache show beep
Package: beep
Priority: optional
Section: sound
Installed-Size: 60
Maintainer: Gerfried Fuchs <rhonda at debian.at>
Architecture: i386
Version: 1.2.2-22
Depends: libc6 (>= 2.7-1), debconf (>= 0.5) | debconf-2.0
Filename: pool/main/b/beep/beep_1.2.2-22_i386.deb
Size: 23578
MD5sum: 1de58749c022cee97260ee36a213873e
SHA1: 912d3764c092bf9bfbfc298cb0da335d8a9f9fbb
SHA256: 3a9037ea6602960e41533c4e9148a6982d6a92bffd91acc690f3a41df5bcc781
Description: advanced pc-speaker beeper
 beep does what you'd expect: it beeps. But unlike printf "\a" beep allows
  you to control pitch, duration, and repetitions. Its job is to live inside
   shell/perl scripts and allow more granularity than one has otherwise. It is
    controlled completely through command line options. It's not supposed to be
     complex, and it isn't - but it makes system monitoring (or whatever else it
      gets hacked into) much more informative.
      Homepage: http://johnath.com/beep/
      Tag: implemented-in::c, interface::commandline, role::program, scope::utility, works-with::audio

in debian stable - try morse code with that ?

Or http://search.cpan.org/dist/PerlSpeak/

Computer says No!
;)

Regards

L.