I have to look away from their faces when they sing

I am a week behind on Glee episodes, so I just saw the one where Santana wrote the song "Trouty Mouth." I loved that, because I have long since decided that Glee is the Show of Weird Lips. What is wrong with the mouths on that show? I'm a proud owner of Tina-Fey style thin, hard, fleshless chicken lips, thankyouverymuch. I just don't get Lea Michelle's lips. Or Chris Colfer's. Or Trouty Mouth's.