So, he stopped showing his teeth, because people made fun of them. Then he stopped drawing on his eyebrows and piss poor attempts at inverted crosses because people made fun of them. Then he took out his piercings because people made fun of them. Now he covers his face because people made fun of it. Now that people make fun of him for covering his face, what's the next step he's going to take?
Actually, I think he removed his piercings because he's a lazy pig and they were too much work to take care of and probably got infected often. Or because of sensory issues cause by Autism, especially when putting on those stupid balaclavas and bandanas. But, yes, Phil does tend to react to whatever we tease him about. He's like a smelly, obese monkey dancing for our amusement.