If the outside edge looks to be wearing slightly faster than the inside edge, this would indicate A: to little toe in, or B: to much toe in?
This seems like it should be insanely easy to figure out, but my brain is apparently fried, and I cannot seem to figure out which it would be.

 

I'd say camber also. Toe in/out the tire would still wear evenly across the tread.

 

If it's the outside of both front tires, could just mean it's time to rotate.

 

To answer your question that would be too much toe in. Outside edges- toe in, inside edges- toe out. The easy way to rember is to look at your feet and witch way your big toe is pointing in relation to the wear, in or out. Really bad toe can wear your tire very fast as it skides the first lug a bit not nessarly the hole tread. Camber can cause that but it will happen very slowly. If its toe adjust it, if it camber just do tire rotations sooner.