User blog comment:Sannse/Don't Feed the Trolls/@comment-3508190-20120911170813/@comment-8-20120911175708

I liked this one http://www.flickr.com/photos/thomwatson/1155886/

And there were a lot of other scary looking ones on Flickr (including ones with the right license). But the troll doll was easier to photoshop in to the sign :P