わーい、すごーい

たーのしー

friends.lua

Friends = {}
Friends.new = function(skill)
    local this = {}
    this.skill = skill
    this.message = ''

    this.wai = function(self)
        self.message = self.message .. "わーい\n"
        return self
    end
    this.sugoi = function(self)
        self.message = self.message .. "すごい\n"
        return self
    end
    this.tanoshii = function(self)
        self.message = self.message .. "たのしー\n"
        return self
    end
    this.friends = function(self)
        self.message = self.message .."君は" .. self.skill .. "がとくいな、フレンズなんだね!!\n"
        return self
    end

    return this
end

Friends = Friends.new('クソリプ')
print(Friends:wai():sugoi():tanoshii():friends().message)

元ネタ

PHP: http://qiita.com/t_ishida/items/bae7e62950d81f427f13
Scala: http://qiita.com/YukiAsu/items/d75b5e16f641c9d4bbf2
Golang: http://qiita.com/sakajunquality/items/5c4a2dc6967e584193ad
Ruby: http://qiita.com/844196/items/debc0cd1d39a6c3e32c7
Python: http://qiita.com/Nao-Y/items/f544a96cbd09b135c7e7
Bash: http://qiita.com/fk_2000/items/afd5f4ca8f5bb25011c7
Java: http://qiita.com/hanakayui0628/items/97242465693bda8cacd2
Swift: http://qiita.com/fromkk/items/0797bdf3923622073a4f