Hm. I would definitely play the Grob over 1. f3. Heh, I'd play the Grob over a lot of stuff. I'm surprised Fritz ranks 1. f3 higher than 1. g4.
But if there is a lesson to be learned here... never, ever, play 1. f3 2. g4, due to a possible Qh4# from black 
1. Na6 would be quite impressive. I believe Kasparov did that once and was thrown out on suspicion of cheating.
1.Na6 is impossible. ;)
I've heard '1.h4' is worst, mostly.
H4
dont worry too much about computer analysis in openings, they suck a lot. while of course moves like g4,f3 are in the lower end.. the order may be different.
Ive learnt a nice crushing line for 1.b4 for any OTB surprise attempt, I really need to learn something against g4 now.
I actually used 1. f3 as a beginner and built a fort like this:
f3 is awful. It is worse than being Black in a regular game?!
it would seem the best white could hope for would be to literally play as black after 1...d5 2.f4
yeah
Any more notes
There's a very long thread on the Sodium Attack (1. Na3). It's 16 or 17 pages, I believe. I did my best to encourage the opening, but I think I failed. :)
F3 fort goes to great endgame
Here is my post on how bad 1.h4 is.
No, an attack on the wing should be met with a counterattack in the center. Black will take the center and have a substantial advantage.
The point behind the rook pawn openings is to allow a rook lift to assist in the attack while the rook pawn is used as a battering ram in a pawn storm attack.
The problem is that this opening is the worst opening in chess, even worse than 1.g4. In rank 1.a4 is slightly better than 1.h4 because it does not weaken the kingside. 1.h4 creates a weak pawn on h4 that can only be defended by the rook and a pawn move to g3, further weakening the kingside. It does not open diagonals for the bishops, and the knight's future is questionable. The point of a rook lift is very slow, losing several tempo, allowing black to build up a powerful position. Now for the theory.
1.h4
This opening is referred to as Kadas Opening
1...d5
This move takes a stake in the center and prevents a possible rook life unless white wishes to expend an additional tempo on a pawn move.
But, there is a better move.
1...c5!
This puts to question White's first move. White would not play 2.d4 because it causes an additional loss of tempo.
2.e4
This is the only sensible move as others allow black to take the center.
2...b6
This move sets up a fianchetto to attack White's weak pawn on e4. The defense of this pawn becomes very difficult for white.
3.Nc3 Bb7
This also prepares a d5 pawn break cementing Black's grip on the center.
4.Bc4
To prevent the bishop from being blunted by a defensive d3 after a d5 pawn break.
4...e6!
Black now has several threats: The d5 pawn break, and Be7 threatening White's weak h4 pawn.
5.d3
Probably White's best to get the other bishop out and castle queenside if possible.
5...Be7
Forcing a concession by white to deal with the threat.
6.Nf3
Again, probably the best move. After 6.h5, black can just play 6...h6! White wasted an additional tempo so black can use his time to prevent the advance. Furthermore, White's dark squares are very weak. If white instead plays 6.Qg4, then black gains at least two more tempos after 6...Nf6. If white continues 7.Qxg7? black should play 7...Rg8! 8.Qh6 d5! and white is losing.
6...d5! 7.exd5 exd5 8.Bb5+ Nbd7 9.Ne5 Nf6 10.Bg5 0-0!
White is completely lost.
Hello Unorthodox chess players,
According to Fritz, f3 is the second worse move on the board. Can you guess what it considers the worst? (Hint: I love this opening and have played it three times in a row, and won all three. Not a very good hint, huh)