Interesting concept; however, it is one that I have seen used a million times before.
The difference between easy (which can last forever) and hard is quite drastic. This is not a negative, however, as going easy on 'left' and 'right' is good for those new to computer games. (Welcome, young children to the evil clown keyboard learning session!)
I have seen many similar games, so originality isn't where the forte of this game lies.
I think it would be more interesting to have to 'dodge' incoming objects, (pies or horns or clown balls or something?) and have to regain your balance after dodging. If not that, then perhaps an upgrade system, where if you go long enough you can give your clown masks or balancing boots or something.
Despite the flaws, I played for about 15 seconds. Which is a long time for me on a game with no story line, so kudos!