class Foo
  def bar
    :baz
  end

  def self.baz
    :bar
  end
end
#=> nil

foo = Foo.new
# returns a new Foo object, foo

foo.bar
#=> :baz

# This is how we normally declare our classes.
# I think that this is because this is how we teach
# other languages, so teaching Ruby this way is just easier.
# However, there are other ways we can do things.