Stupid things you did in games in the past.

[Skyblade]

First a Final Fantasy based one; I totally miss read the line "Attack while the tail's up! It's gonna counter with its laser." I thought it was telling me to attack when the tail was up, before the boss used its laser or something when in actual fact it was warning me that if I attacked when the tail was up it would counter with the laser - I kept attacking, and couldn't figure out why it kept firing the laser, and soon died.

I hate that line. Because the dialogue is literally:
"Attack while the tail's up!"
"It's gonna counter with its laser."
Since it comes in two lines, and the first line is literally telling you the exact opposite of the proper strategy, almost everyone screws up this fight the first time around, just because they enter their commands before line 2 pops up.