@wdlindsy fair enough, thanks for elaborating on your own usage.
For me, when I see other people saying it, it seems to be a euphemism in the realm of other mental illness-stigmatising terms like mad, crazy, insane, batsh*t, et cetera.
I'm glad it's not what you meant in this case. But I'd maybe consider as well the environment your usage sits in, and whether your intent is matched by how it's received? Food for thought perhaps.
Have a good aft/eve as applies where you are