means "raining cats and dogs"
today is the 7th day of CNY so some friends gathered at my place for yusheng and there's this guy (i won't say which sec sch he is from k...) his chinese is suuuuuper bad. he is a baba-nana i.e. baba who is a banana. while lo hei-ing, we were saying auspicious phrases like Xin Xiang Shi Cheng (heart think thing happen), Sheng Ti Jian Kang (body healthy), Bu Bu Gao Sheng (step step high rise) etc... this person went...
babanana: Qing Peng Da Yu
babanana: Lei Dian Jiao Jia (thunder and lightning)
babanana: Feng He Ri Li (good weather)
we: OEI! what r u saying????
babanana: Da Tong Xiao Yi (similar)
turned out he didn't know many Chinese proverbs so he was just repeating his sec sch Cheng Yu (chinese proverbs)... he thought lo hei only need to say 4-word phrases -.- diao... like that also can...