It’s one of those things where you know you know it but you can’t quite remember; and it’s a funny thing because thoughts like this are those on which we seem to base our decisions more often than the conscious and thought-out thoughts.
I suppose that’s why I still curse and throw things sometimes, as I can’t quite remember the time that I decided this was not a thing I should be doing. Something else takes over and I just do it before I can even think.