Ever want to liven up that business meeting or teacher's lecture? Needs no more.-- stringstretcher, Nov 06 2003 Ho hum.-- DrCurry, Nov 06 2003 1. White ink would be funnier.
2. *All* the markers have white ink.-- phundug, Nov 06 2003 With white ink they might think that they're just out of ink.-- Condiment, Nov 06 2003 Maybe *appearing* ink would be funnier. Teacher writes equation with marker -- nothing. Tries all the markers in turn -- still nothing. Finally goes out of the room to get some more markers, and when she gets back the board is completely covered with scribbles.-- phundug, Nov 06 2003 I thought these might be markers which make me sick. The smell of them usually does anyway.-- dobtabulous, Nov 07 2003 i like both the disappearing and appearing ideas listed....it could be a double market...and both would be funny!! +-- babyhawk, Nov 07 2003 How about markers that emite a horrid smell - e.g. rotten eggs!! That would bring the meeting to a quick close and you could get back to surfing the web at your desk!-- flynn, Jan 06 2007 random, halfbakery