. 问对方问题，识别出自己的身份
.@叮叮叮：游戏规则就是：写下一个词，贴在对方脑袋上，猜的人问10个问题，必须以“我是……吗”的形式问。然后猜出自己脑袋上的词
Rule:
- write down a word stick on mutual forehead. One person need to use the form like "am I a pig ..." ? Using the way to contract the range of the answer until one side have ask ten question or guess the word
Example:
- apple / pig
- black hole / eyes
- watermelon / diamond
- neck / tissue
- elephant / thumb
