Best premove ever

I felt so stupid after the move...

fr.lichess.org/LiZq7CrM/black#64

Computer says that gives white the advantage.

You must have been in time trouble.

No, I was just too lazy to wait for his move and in my mind he was going to take with the rook.

But wouldn't undoubling the isolated pawns make way more sense than Rxf4 anyway?

aw...