屁是臭的這大家都知道，那屁為什么會(huì)臭呢？這要從屁的成分和我們吃的食物說起。
Ever pull someone's finger and hear a weird noise come out of his or
her butt?
Ever sit in a tub of water and see bubbles come out of your hiney?
This strange noise and vibrating sensation that came from your butt is most
likely caused by a fart.
A fart is a combination of gases (nitrogen, carbon dioxide, oxygen, methane, and hydrogen
sulfide) that travels from a person's stomach to their
anus. When a person swallows too
much air or eats foods that the human digestive system cannot digest easily gas
becomes trapped in his/her stomach. The only way for this excess gas to exit the
body is through the anus.
The gas that makes your farts stink is the hydrogen sulfide gas. This gas
contains sulfur which causes farts to have a smelly odor. The more sulfur rich
your diet, the more your farts will stink. Some foods that cause really smelly
farts include: beans, cabbage, cheese, soda, and eggs.
A scientific name for a fart is flatus or flatulence.
The word fart is just one of many different terms used to describe the
release of gases from the human body. Other popular names for farts or farting
include: gassers, stinkers, air biscuits, bombers, barking spiders, rotten eggs,
and wet ones. You can pass gas, break wind, blast, beef, poof, rip one, let one
fly, step on a duck, and cut the cheese.
Farts can be stinky, wet, loud, or silent but deadly. Pee-eeew!!!
Did you know?
On the average, a healthy person farts 16 times a day.
Hey guys, don't be fooled by girls who tell you that they never fart.
Everyone farts, including girls. In fact, females fart just as much as males.
Many animals fart too. Cats, dogs, and cows. Elephants fart the most.
People fart the most in their sleep.
Farts that contain a large amount
of methane & hydrogen can be flammable.
nitrogen: 氮
methane: 甲烷
hydrogen sulfide: 氫硫化物
anus: 肛門
（英語點(diǎn)津 Annabel 編輯）
