TYPES OF PEOPLE AT THE POOL

I would know because I've been to a pool. However, I'm not a frequent pooler so, please, make suggestions. I need/deserve to learn.
  1. Lap Swimmers
    I'm proud of people who can swim so hard.
  2. People who dive for things
  3. Cannonballers
    Maybe I don't wanna be splashed. Thanks though for 'asking'.
  4. People who pee and tell everyone
    Yes, thank you. I DO want to remember that I'm swimming in pee.
  5. People who pee and don't tell anyone
  6. People who just stand there
  7. People who tread water
    Suggested by   @julesjoyce
  8. People who throw other people in the pool
    Suggested by   @julesjoyce
  9. People relaxing on inner tubes or floats
    Suggested by   @julesjoyce
  10. AND THE MOST NOTABLE, LIFEGUARDS