noun; 1.a minor explosion between the buttocks, caused by too much gas in the large intestine.
2. something that feels really good, especially when you hold it in for hours because you don't want anyone to hear or smell it.
3. stress release
4. something that annoys people and causes you to get punched
Danny let out a big fart in class because he just ate some bean burritos for breakfast.
When Johnny farted, all the girls ran away.