OK, so I shouldn't even be drinking this stuff, but I have a full-on week at work - what with graduation ceremonies twice a day and all. I need a bit of help shifting half way through the day.

So I am not amused to discover a four-pack of red bull has gone up from £3.70-something to £4.46 - overnight - at my local Sainsbury's.

It's cheaper to buy cans individually.

Back to coffee and then a caffeine detox - i'm not putting up with this! *stamps foot, huffs and tosses fringe*