Caveman Carl has OCD... disorganized surroundings drive him crazy, he had an obsession, and a need to organize everything around him. One day he found a some rocks.

Me Carl

Caveman Carl was looking for food when one day, he stumbled across a group of disorganized rocks. His obsession with organizing his surroundings in this case rocks prevented him from doing daily tasks he needs to do to survive. He couldn't stray away from organizing to eat, or sometimes even sleep.

I like big rock, I hate small rock

What have you been doing we havn't seen you around

Yeah, why don't you hangout anymore

Carl's OCD had gotten in the way of his habits before, but it finally spread to affecting his social life, and was ruining his friendships. This will make recovery harder, because you lose a valuable support structure that friends provide, and friends can also help you seek help.