I don't do fizzy drinks and very rarely drink coffee. I had a small one this morning as I was knackered and I'm now sweating and am pretty sure my desk is going to grow teeth and eat me if I don't sharpen all my pencils to the exact same length as each other.

Can anyone else not handle caffeine? One sip and my heart starts going so fast that I'm willing to believe my nearest and dearest are actually reptilian KGB members.