module.exports = function(controller) {
    controller.hears(['(っぽい|だろう|かも|そうそう)'], ['direct_message', 'ambient'], function(bot, message) {
        bot.reply(message, '(´・ω・｀) そっかー');
    });

    controller.hears(['忙し'], ['direct_message', 'ambient'], function(bot, message) {
        bot.reply(message, '(つ∀｀*)　気のせいだったらいいのに～！');
    });

    controller.hears(['ぐへへ'], ['direct_message', 'ambient'], function(bot, message) {
        bot.reply(message, '(〃ﾉωﾉ)ｲﾔﾝ');
    });

    controller.hears(['たい$'], ['direct_message', 'ambient'], function(bot, message) {
        bot.reply(message, 'd(´ー｀*) だねぇ');
    });

    controller.hears(['(眠|ねむ)い'], ['direct_message', 'ambient'], function(bot, message) {
        bot.reply(message, ':monster: 三');
    });
};

@@ -125,32 +125,107 @@
 bot, message) %7B%0A
+        var p = parseFloat('0.3');%0A        if (Math.random() %3C p) return;%0A%0A
         bot.repl
@@ -622,32 +622,140 @@
 bot, message) %7B%0A
+        var p = parseFloat(process.env.DOCOMO_DIALOGUE_P %7C%7C '0.5');%0A        if (Math.random() %3C p) return;%0A%0A
         bot.repl

Add response probability