(Internet slang) transcription of "not at all" – English words in a song promoting the 2008 Beijing Olympics sung by Huang Xiaoming 黃曉明|黄晓明[Huáng Xiǎo míng], who became a laughing stock in China because his pronunciation was perceived as embarrassingly bad

to be a laughing stock

to make a fool of oneself (i.e. equivalent to 鬧笑話|闹笑话[nào xiào hua])