[1] : Jargon File (4.3.1, 29 Jun 2001)

smoking clover n. its a display hack originally due to bill gosper.
   many convergent lines are drawn on a color monitor in such a way that
   every pixel struck has its color incremented. the lines all have one
   endpoint in the middle of the screen; the other endpoints are spaced one
   pixel apart around the perimeter of a large square. the color map is
   then repeatedly rotated. this results in a striking, rainbow-hued,
   shimmering four-leaf clover. gosper joked about keeping it hidden from
   the fda the u.s.'s food and drug administration lest its
   hallucinogenic properties cause it to be banned.


see also:
display hack 

[2] : The Free On-line Dictionary of Computing (27 SEP 03)

smoking clover
     
        its a display hack originally due to bill gosper.  many
        convergent lines are drawn on a colour monitor in aos mode
        so that every pixel struck has its colour incremented.  the
        lines all have one endpoint in the middle of the screen; the
        other endpoints are spaced one pixel apart around the
        perimeter of a large square.  the colour map is then
        repeatedly rotated.  this results in a striking, rainbow-hued,
        shimmering four-leaf clover.  gosper joked about keeping it
        hidden from the fda the us's food and drug administration
        lest its hallucinogenic properties cause it to be banned.
     
     
see also:
display hack aos 

Smoking >> S Words
Smoking, definition of term: Smoking
smoking_pag1.html

Clover >> C Words
Clover, definition of term: Clover
clover_pag1.html

White Clover >> W Words
White Clover, definition of term: White Clover
white+clover_pag1.html

Red Clover >> R Words
Red Clover, definition of term: Red Clover
red+clover_pag1.html