I'm actually feeling like a bit of a fraud at the moment. It's... let's see... 50 hours since I last had coffee, so that's genuine enough. What's odd is that the promised withdrawal symptoms -- and in particular the violent chiselling headaches which I remember from previous attempts -- have yet to materialise.
I had some milder headachiness yesterday, which was easily addressed with paracetomol. I haven't needed to take any today. I'm also tired, though not nearly as much as I'd expected, and have exploded with unjustified rage at my beloved wife three times for no reason that would have made sense to anyone with any understanding of logic. My thinking feels muzzy and unfocussed, but no more so than on a warm day after a heavy lunch, say. I've even been able to get a small amount of writing today, with the help of fruit teas and a strategically-timed nap.
My aforementioned beloved wife has two mutually contradictory hypotheses about this. Either: a) I've been drinking so much coffee that my body has stored up caffeine reserves which it's still working its way through (unlikely on biological grounds), or b) I've been drinking so much coffee that my body has stopped experiencing it as a stimulant and has merely been experiencing it as a toxin (also unlikely, though possibly slightly less so).
What seems most probable to me is that the headaches are still to come, but are awaiting the most effective moment to strike -- probably as soon as I get to work tomorrow morning. In my impaired mental state I feel like a dinosaur waiting for an asteroid.