Its f3,Kf2
Worst opening move

Its f3,Kf2
Agree the retard king is a complete dud.
"1. D4. Black is too comfortable."
Black being comfortable isn't a measure of how good or bad an opening is. In fact I dare say that 1.d4 is tied with 1.e4 1.c4 and 1.Nf3 as best.
1.Nf3 is a bit more flexible and avoids the Dutch (1.Nf3,f5?! somewhat dubious here without the pawn committed to d4 2.d3! and 2.e4!? is an interesting acceptable gambit) so 1.Nf3 might be better. The knight goes here anyway whereas you don't know if you want the pawn on d4 quite yet. 1...d4 2.d4,c5!? isn't the easiest to play against though. 1.Nf3 I think is only marginally better than 1.d4 but is in practical terms tied with it.
@ l_goch: The worst move is to sit there and allow your time to run out and to have your flag drop!
My dad said he sow it in a game, in a tournament in Zagreb 25-30 years ago:
1. e4 e5 0-1 (time expired).
White played his first move,black was not there. He wait some time, and then went in a caffe. Black come, made his move, and white has a nice time in the caffe and forgot to return.
And I had a topic here: The worst chess move EVER!.