I am trying to think of ways to describe the 4th dimension. This explanation should describe it both spatially and why it is considered time (well, technically if you describe one then you almost have to be describing the other).
Anyway this is basically what I have come up with so far, elaborate, insult, critisize, confirm, etc:
"When you look at an object in a lower dimension you can see every single possible view of that object in an instant (meaning no time has passed) where if you were actually a part of that lower dimension it would take time to travel around and look at every possible view because you would not be able to view it all in one instant."
Just to throw more stuff in, a 4th dimensional being would be able to extract a 3dsphere from a 3dcube without passing through the walls of the cube, much in the same way a 3rd dimensional being (THAT'S US!) would be able to touch the bullseye of a dartboard without first passing through the boundaries of the outer rings (a 2 dimensional being would have to pass through the rings in order to go to the center, also keep in mind a 2d being cannot look up or down).
I am going to stop here because I want to know if people find that accurate, because I am having an argument with a friend and I think I am right