james@phrygian:/usr/bin$ apt-get moo
         (__)
         (oo)
   /------\/
  / |    ||
 *  /\---/\
    ~~   ~~
...."Have you mooed today?"...


james@phrygian:/usr/bin$ aptitude moo
There are no Easter Eggs in this program.
james@phrygian:/usr/bin$ aptitude -v moo
There really are no Easter Eggs in this program.
james@phrygian:/usr/bin$ aptitude -v -v moo
Didn't I already tell you that there are no Easter Eggs in this program?
james@phrygian:/usr/bin$ aptitude -v -v -v moo
Stop it!
james@phrygian:/usr/bin$ aptitude -v -v -v -v moo
Okay, okay, if I give you an Easter Egg, will you go away?
james@phrygian:/usr/bin$ aptitude -v -v -v -v -v moo
All right, you win.

                               /----\
                       -------/      \
                      /               \
                     /                |
   -----------------/                  --------\
   ----------------------------------------------
james@phrygian:/usr/bin$ aptitude -v -v -v -v -v -v moo
What is it?  It's an elephant being eaten by a snake, of course.