# instead of
lol += alphabet[rand(alphabet.length)]

# do this

# lib/extend_array.rb
class Array
  def random
    self[rand(self.length)]
  end
end

# main.rb (or wherever)

arr = ('a'..'z').to_a # array of a to z

arr.random # => "b"
arr.random # => "l"
arr.random # => "p"
arr.random # => "k"
arr.random # => "o"
arr.random # => "t"
arr.random # => "l"
arr.random # => "n"
arr.random # => "l"
arr.random # => "l"

# and so on.. always returning a random element.
# Now you can do

lol << alphabet.random

# Much cleaner and rubyesque