香港小市民的住屋環境是出名峽窄的，非要練得一身好功夫，出入家門時會得修腰束肚的絕技，否則是很難不會令自己好過的。
再有便是在早上繁忙時間乘地下鐵上班的時候，若沒有這一身好本領，保管你會三番四次都擠不上車而望車門輕歎，恨不能展翅高飛。
In Hong Kong, common people's living environment is very very small due to the high rental and the cost of building and the land. You have to train yourselves with a high quality technology as you go out of your home and go to your office, or, you would make yourself very unhappy when you are trying to get in the train or bus every morning. Sometimes, you are thinking about to fly with your own wings.
