Perhaps Andrew Davis was merely attempting to get on the Top Ten Evil Clown List for 2011? Not much has floated to the top since the clown reports that made the list from 2008, but this year is starting off rather strangely.
Of course, evil clowns (and Joker clones) turned up in 2009, as well as real killer clowns in 2010. But while 2011 seemed to start off rather slowly, with a clown attack on March 22nd, these new events, noted above, may be a clue of things to come.
Trying to find the "Top Ten Evil Clowns of 2011"? See here.