Meaning:
First used by Chinese netizens on www.mop.com, a popular online forum, this term is similar to “LOL,” which means “laugh out loud.” However, the Chinese term is more flexible depending on its context, which can be a self-mocking laugh or even sneer.
Example:
A: 国庆假期你去哪儿了吗？
Guóqìng jiàqī nǐ qù nǎr le ma?
Did you go anywhere during the National Day holiday?
B: 我开车去广州玩，路上大塞车，一个小时才走了五十米。233 ...
Wǒ kāichē qù guǎngzhōu wán, lùshàng dà sāichē, yīgè xiǎoshí cái zǒu le wǔshí mǐ。èrsānsān ...
I drove to Guangzhou to have some fun, but was stuck in a terrible jam on the road and edged only 50 meters ahead in an hour. (Self-mocking laugh ...)