guy 1: is that your girlfriend upstairs? guy 2: no, she's my 8-9:30 girl
a particular type of girl who will drive upwards of 15 min to your house to have sex with you once a week from 8-9:30pm
"guy 1: is that your girlfriend upstairs? guy 2: no, she's my 8-9:30 girl" What is the definition of "8-9:30 girl"?