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

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.