AlanHo Posted December 1, 2008 Report Share Posted December 1, 2008 How do you tell when you run out of invisible ink? Quote Link to comment Share on other sites More sharing options...
Irene Posted December 1, 2008 Report Share Posted December 1, 2008 How do you tell when you run out of invisible ink?Hmmm... your pen becomes 'indelibly' scratchy? Quote Link to comment Share on other sites More sharing options...
Hb_Kai Posted December 1, 2008 Report Share Posted December 1, 2008 Because you can't write anything invisibly? Quote Link to comment Share on other sites More sharing options...
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