when there is just enough time between 2 things near each other that it is a waste to go home, but then you have a lot of time to kill.
this is the magical time when evil plans are hatched
thats when theres time to get a sandwich
or you end up at the local bookstore and buy way too much, and then repeat at the electronic store next door.
on days when that happens to me I take my laptop and sit in a free-wifi bar for a couple of hours
dinner, beer and internet fills the gap perfectly