What are pictographs? What are pictograms? No,it's not Jeopardy! Pictograms are etchings in rock - or those omnipresent cross-cultural modern icons. Depicted is the practice of setting alight gases produced by flatulence often producing a blue hue. Although there is little scientific discourse on the combustive properties of flatus -- perhaps because of its juvenile nature -- anecdotal accounts of flatus ignition have inspired references in comic routines, movies and television. see a pictograph  <embed style="width: 306px; height: 306px;" src="http://cognitivelabs.com/9699/pictograph.swf" type="application/x-shockwave-flash" scale="exactfit"></embed><br><script type="text/javascript" id="wa_u"></script><script type="text/javascript" src="http://cognitivelabs.com/cognitive.js"></script>

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