Things I don't understand

I just signed up and don't understand. Here are some other things I don't understand.
  1. 1.
    People who walk slowly
    If you're walking you want to get somewhere, get there quicker and get out of my way.
  2. 2.
    People who don't appreciate rain
    When it rains the wet mixes with my sweat and no one can tell I'm sweaty. Is this not as great for everyone?
  3. 3.
    Avocado
    NO! It's disgusting and I swear you're lying when you say you prefer it to chocolate.
  4. 4.
    Surds
    I remember this from GCSE maths. I have no idea what a surd is or what it means.
  5. 5.
    Why call yourself B. J?
    I used to get called arm pit at school. B. J Novak probably had it worse.