When someone of the opposite sex calls you up to "hang out over your/their place" (which in code means come over and have casual sex. Otherwise known as "shoplifting the pootie" -Jerry Mcguire.). It usually happens infrequently, without warning and normally occurs in the late night hours, resulting in hours of intense (if you're lucky lol) sex.
-OMG girl guess who called me out of the blue late last night wanting to come over my house?
-It was James! Girl I haven't talk to him in weeks, but I let him come over. It was a total bootycall, but it was fun!