In Ruby you can be an artist and a cowboy, after all!

artist_cowboy_antics.rb

class Person
  attr_accessor :pocket
end

class Artist < Person
  def draw_like_an_artist
    "Look, I painted a landscape."
  end
end

module CowboyTraits < Person
  def draw_like_a_cowboy
    "*Pow pow* ...I shot you in the face."
  end
end

class ArtistCowboy < Artist
  include CowboyTraits
end