Why do characters in Glee keep slipping in the real names of the actors they are talking to?

In "Glee," characters occasionally slip in the real names of the actors as a playful nod to the audience and to break the fourth wall. This technique adds an element of humor and self-awareness, acknowledging the performers behind the characters. It enhances the show's meta-narrative, allowing viewers to connect with both the characters and the actors in a unique way. This approach contributes to the show's overall charm and light-heartedness.