Are there Chinese approximations for the colloquial/slang English terms “snot rocket” or “bushman's blow”?
In English I know of two colourful terms for blowing your nose without use of a handkerchief or tissue by holding one nostril closed and expelling mucus from the other: bushman's blow  snot ...
I have sometimes wondered what would be the appropriate way of addressing (fellow) students that are junior to oneself. Given name? Full name? Name + 妹/第? Are there even cases where one can use 哥/兄 ...