Silly!
Lemon juice is used to make the message.
You need to hold your screen over a candle to make it visible.
(
le brian,
Thu 19 Apr 2007, 23:22,
archived)
*holds screen over candle
*waits
*phones fire brigade
(
Hummel Who died and made you....oh wait....,
Thu 19 Apr 2007, 23:23,
archived)