How I choose lunch at the ESPN cafeteria each day

Choose_Lunch.rb

require 'lunch_choice_observation'

LUNCH_CHOICES = ["Pizza", "Salad"]
SIDE_CHOICES = ["Clif Bar", "Popchips", "Glenny's Soy Crisps"]
DRINK_CHOICES = ["Diet Pepsi", "Diet Dr. Pepper", "VitaminWater Zero", "Sprite Zero", 
                 "Water", "Water", "Water", "Water", "Water", "Water"]

def choose_lunch

  choices = Array.new

  number_of_items_today = rand(2)+1

  number_of_items_today.times do |x|
    choices << LUNCH_CHOICES[rand(LUNCH_CHOICES.length)]
  end

  choices.uniq!

  if number_of_items_today == 1
    if rand(5) > 2
      choices << SIDE_CHOICES[rand(SIDE_CHOICES.length)]
    end
  end
  
  LunchChoiceObservation.observe!

  if LunchChoiceObservation.interesting_side?
    choices.slice!(1,2)
    choices << LunchChoiceObservation.interesting_side
  end

  if self.super_tired?
    choices << "Sugar Free Red Bull 12oz"
  else
    choices << DRINK_CHOICES[rand(DRINK_CHOICES.length)]
  end

  choices

end

puts choose_lunch