我一直在思考一個問題
為什麼人類大便要坐著
我們不能站著大便嗎?
不能躺著大便嗎?
不能爬到樹上大嗎?
為什麼我們大便一定要坐著或蹲著
想這個問題已經快把我搞瘋了
已經坐到腿麻了
有掛嗎?
沒想到絕對不輕易離開馬桶
http://i.imgur.com/BeN3XBy.jpg
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