It is an alibi to going to the strip club and a code word among men. Anyone can tell their wife or mother I'm going to hang with cousin Vince and not get scolded.
Kip: Want to follow me to softball?
Howie: Can't man I'm visiting vince.
Kip: how do you get money for that?
Howie: I go to the place off Overland
Kip: That place is so dirty and cheap its like the Pojo's of all strip club.
Howie: Ya Vince just likes the nickle slots