"别笑！"

Translation: Don't laugh!

[shiranrc]

Hahaha.

[gadamson]

"Don't smile" should also be accepted

[Foblin]

Yes. If 笑 means both "smile" and "laugh", what's the problem with "Don't smile" here?

[Handrisuselo]

Let's laugh before laughing is prohibited :D :D.

[Keith_APP]

It is quite a useful phrase to learn before telling your Chinese friends a stupid thing:

先别笑 / Don't laugh first

[George792719]

It's probably good to use when you have already done or said a stupid thing too.

[Cat722536]

Reported for not accepting "don't smile"

[sirdanilot]

why not stop laughing

[grippygecko]

Because 停止 isn't used here, 别 is used. There is an important difference. I can tell you DON'T do something regardless of whether you are currently doing it. But I would only ask you to STOP if you had started. To say stop you would use 停止.

[SheenaBastet]

Difference between 别 and 不

不 means "not" and 别 means ",don't do (something)." One is a simple negation, and the other is a (negative) command.

also good to compare them with another negation word:没有， which literally means lack of the action:having, so in other words it means don't have or doesn't have.

source : https://chinese.stackexchange.com/questions/1126/difference-between-%E5%88%AB-and-%E4%B8%8D

[iamjerichog]

Ok

[Foblin]

LOL

[Elijah.Fung]

Stop laughing. 不行吗

[pHFje]

Should also accept 'don't smile'

[stupedfatidiot]

If you laugh really hard to much than you break your laugh box

(Anyone else has seen that episode?)

[ChromateX]

不要 works too?