My son asked if Spider-Man and Wolverine were friends, and I jokingly said that they were more like frenemies. Then he started asking me over and over what a frenemy is, and none of my definitions really satisfied him.

I guess he's having trouble understanding how someone can be both a friend and an enemy at the same time! He kept asking me about it, and so I finally dug up this video on YouTube:

Those are more examples though, and not really a definition.

How would you explain frenemies to a five year old?