I bet Carlsen could get a win with it though!
The f5 Opening

I played this opening in a 24 hour per move time control:
http://www.chess.com/echess/game?id=81825792

I like 1.a3 too sometimes, especially if I have too many white games since 1.c3,c5 or 1.c3,d5 and 1...e5 2.c4 isn't forced. That leaves 1.a3 usually transposing into many Sicilians up a tempo, but black's setup is good because it's designed to slowly phase out white's initiative and take it himself. White on the first move already has the initiative.
1.Nf3 2.b3 3.Bb2 4.e3 is a great system usually but sometimes black can disrupt this system.
1.e4,f5? is the herpaderp gambit, for those times you must lose.
I'll fall out of my chair if he does!!!!!