I came in and applied at the Quiznos Sunday and he personally asked me where I worked before and asked me what times I could work and if I knew any of the high school kids that worked there. he even read one of the names aloud off of his computer and asked me if I knew here, because she went to the same high school as me. (he was on his computer looking at the schedule thingy) And he said twice that he would call me back. It's Tues. and he hasn't called back. Is it too early to go in and ask about the opening again? Does it sound promising, like I'm going to get the job?
Oh yeah and this Quiznos is never very busy and ALL of his employees are in high school.

If you can I would send an email first and just keep it casual. Say that you enjoyed meeting with him and that you are still very interested in the job.