[交流] Funny English quiz in everyday（NO.129）

Previously

Q:How can you change a lady into a boy?

A: TO TAKE AWAY THE LETTER 'Y' IN THE WORD 'LADY'.

List of prize winner：ANDPing          li123cl          suoxie1987          钓鱼          Mary0505
Congratulations！

New Month, New Rules~

1. Please don't write the answer in the post directly, you have to reply me the expression to show that you want to join the quiz.
2. Please don't use the button "edit" to join the quiz, a new reply will be welcome.
3. If you write the answer by accident, please edit it as soon as possible, or I will not give you the reward this time.
4. When you decide to join the quiz, please give me the answer by message of emuch(站内消息) in two munites after you reply .
5. We can communicate with each other in my post only except the answer of the quiz.
6. I'll give my one bb to the first five chongzis who give me the right answer and at the same time, obay the rules.
7. I'll sent both the right answer and the list of ID who get the bb in the next post.

Today’s Question

What thing is known by both the buyer and seller but not known by the user?



We will hold this column everyday.
If you missed it this time, please come on and come here early,
then use your smart head to find the answer.
Good luck to you!
Have fun here!
You will always be welcome, trust me!