I think all of us on SSM know when you were hormonally challenged, HP. We'd show up in the morning, log in, say, oh, HP posted early today (or late last night) and, expecting your usual light-hearted story of the pregnant sex fiend, would, instead, go wide-eyed at the latest rant.
But I have to say, "intellectually" we can usually tell when we're being irrational, but it's usually in hindsight. Or, sometimes, I can see myself as if it's kind of an out-of-body thing. Watching myself go ape-sh*t is not a fun thing.