The worst mouse slip

yes f3 was a little better ! ;-)

Is your mouse ok?

f4 double exclam I was moving pretty quickly and decided I would resign next move LOL. Sadly it was not intentional to do so. Felt like a snake in my arm then it slid too far :( :( :(

I'm pretty sure it happened to me before that I've moved a queen one square short, hanging it instead of mating, that must be worse, no? :D

Yes! I had a mate in 1 and dragged the queen too far.
http://en.lichess.org/6d312mFu

If I did not miss the mate it would have been a 1-0-0 game.

http://en.lichess.org/NGcby5Mh/black