How many of you attacked when the tail was up? Either out of a derp moment or because you already had an attack locked in and the boss lifted its tail before it can go through?

I think this only happened once with me during one of my first playthroughs, but I'm not sure if it was me or my brother. Because I remember seeing the laser attack at least. I'm pretty good with waiting so it's seldom an issue. I just defend, defend, defend until the tail is back down.

Discuss.