So what is a fart and where is it come from? Well, a fart is a simple gas coming from your intestines.

甚麼是屁？屁又是打哪來的呢？答案很簡單，它其實是一種腸道產生的氣體。

It gets there when you eat, it comes from you blood and from chemical reactions in your body.

只要你吃東西，就會有屁。屁從血液中和體內的化學作用產生。

Fart smells. However, interestingly only about 1% of your farts are stinky.

屁會臭，然而有趣的是，只有百分之一的屁是臭的。

You produce about half a liter of farts every day, and yes, even though they don't admit it, girls fart, too.

你每天可以放約半公升的屁，沒錯，就算女孩們不承認，她們也是會放屁的。

Usually farts aren't dangerous. Even if you go into a room full of farts, you won't suffocate.

屁不怎麼危險，就算你在一間充滿屁味的房間，你也不會窒息。

You would have to fart continuously for about 7 years to produce gas with the equivalent energy of an atomic bomb.

你得持續放七年的屁，這些氣體才會相當於一顆原子彈爆炸的能量。

Another fart fact is that it travels at a speed of 7 mph and you can actually burn a fart.

另一個屁的小知識是，屁的時速是每小時七英里，而且屁其實是可燃的氣體。

It's highly flammable but don't check it yourself.

而且是極可燃，不過可別輕易嘗試在自己身上。

You may get injured. You may burn your clothes or what's worse... yourself.

你可能會因此受傷，燒掉衣服外，更糟的是，還燒到你自己。

For centuries people believed that holding a fart is very unhealthy.

幾世紀以來，人們相信憋屁放是不健康的。

You could catch a horrible disease or get seriously poisoned.

你可能因此患有嚴重疾病，或是中毒。

Roman Emperor Claudius was so afraid that he passed a law allowing farting at banquets.

羅馬皇帝克勞狄一世很害怕還因此頒布法律，允許在宴會上放屁。

Nowadays scientist aren't sure if holding your fart is unhealthy, but allowing your farts travel freely can definitely be very embarrassing.

現今科學家還不能篤定憋屁是否健康，不過暢快地撇風，是蠻尷尬的沒錯。

Have you ever heard about brain fart? Yes, it actually exists, but it's probably not what you think.

不知你是否聽過「大腦放屁」這個詞？真的有這個詞，不過恐怕不是你所想的那樣。

In American slang it means doing something "dumb".

在美語的俚語中，它指的是做一件很「蠢」的事。

Another interesting fart fact is that an Indian tribe in South America called the Yanomami fart as a greeting.

另一則有趣的事是，在南美一個稱為 Yanomami 的印第安部落，放屁則是一種打招呼的方式。

Other awesome fact is that in China you can actually get a job as a professional fart-smeller! Wow! What a career...

更有趣的是，在中國你可以找到一種叫「品屁師」的職業。天阿！真的是很酷的工作！

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