post here when you've consumed so much caffeine that you want to move on to human blood

My tolerance for caffeine seems to have gone way up in the last six months.

Now try going cold turkey for a week and see how you feel.

I have a couple of times in the last two years. There are all kinds of warnings about headaches from caffeine withdrawal but I didn't notice any effects. Someone at work was talking about how they drink a small can of Red Bull and basically don't feel any different while one of their colleagues reported getting the jitters from the same amount of caffeine. Certainly I am a long way from where I was upthread five years ago - drinking a weak Red Bull knock-off and a coffee and feeling like I'm stuck to the ceiling? Not any more. Although I have to say that the Monster Energy has a pleasant light background buzz. Pity that it tastes like my anti-dandruff shampoo smells.