Overview
17 year-olds Sung-eun, and Mi-sook are always curious about sexual matters that nobody teaches them about. One day, new teacher Bong-gu, a handsome and well bred stud,arrives at school and begins to teach their class. He becomes an object to watch and study. Bong-gu, although he seems fine on the outside, suffers from an unknown illness that makes him fart whenever he feels aroused. Three girls learn about this and they go on a mission to make him fart.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 18 | 39 | |
 | 25 | 46 | |
 | 21 | 41 | |
 | 20 | 41 | |
 | 30 | 51 | |
 | 18 | 39 | |
 | 21 | 42 | |
 | 23 | 44 | |
 | 49 | 69 | |
 | - | - |