If you call a tail a leg, how many legs has a dog? Five? No, calling a tail a leg don't make it a leg.

If you call a tail a leg, how many legs has a dog? Five? No, calling a tail a leg don't make it a leg.

如果你把一条尾巴叫做一条腿，那么狗有几条腿?五个?不，把尾巴叫做腿，别把它叫做腿。

-- Abraham Lincoln 亚伯拉罕·林肯