Fgsfds
From lurkmore wiki
You could either say "figgis-fiddis" or "F-G-S-F-D-S", but however you say it, it is the one word that makes no sense whatsoever at all. It all started when someone on 4chan replied to a post with "fgsfds". Oryan (a 4chan user) soon shopped the phrase into a pic of German talk-show presenter Harald Schmidt and now everyone on /b/ posts it. When somebody confuses you by saying something that makes no sense, simply say "fgsfds". Now commonly photoshopped onto pictures of anyone pointing their index finger in the air.