Joonsfaveexpensivegirl means in slang: Colombian batty gyal Do you want to guess her name? If she is hot, she will be called Joonsfaveexpensive Busan girl. She told me that she would rather be Namjoon’s expensive girl than my 7ft dragon when we went on a trip to Egypt together. Joon, the 7ft dragon told me that she does not want my converses. Also, she was also the one who knocked the nose of the pharaoh on the pyramid thing. :0. (in Slang Dictionary, added by Jaycee Briggs)