Meaning:
“我” means “I,” “太” means “too,” “难” means “difficult,” and “了” is an auxiliary word. This term, first used by online celebrity Brother Giao on Kuaishou, a video-sharing app, went viral with his amusing video clip complaining about having a difficult time and meeting setbacks in everything. Netizens created a lot of emoijis to accompany this line, which means “It’s been so difficult for me.”
Example:
A: 你们昨天开学了吧？
Nǐmen zuótiān kāixué le ba？
The new semester started yesterday, didn’t it?
B: 是啊，我前几天每天写暑假作业到半夜，我太难了！
Shì a，wǒ qiánjǐtiān měitiān xiě shǔjià zuòyè dào bànyè，wǒ tài nán le！
Yeah. I have been doing my summer vacation homework until midnight each day for the past few days. It’s been a really difficult time for me!
A: 那你早干什么去了？
Nà nǐ zǎo gànshénme qù le？
Why didn’t you do it earlier?