I've never misclicked anything, but I do have a habit of mistyping things from time to time. I've raised to $44 instead of $4 preflop in NL100 a couple times. A couple weeks ago I was playing a tourney on pacific, was maybe 2nd or 3rd in chips, down to 2 tables. First prize is $2,500. There was an early position raise, call, and reraise. I'm looking at K3o and go to hit 'f' to fold but instead I hit 'r' and min-re-reraise the majority of my stack. The flop comes down Kxx, checks to me, I put in the rest of my chips and get called by KQ and AK, one of which was the chip leader. End of tourney for me.