 In the subplot , Marge finds an anomalously high phone bill for calls made by Lisa to the Corey hotline — a premium rate phone service where television fans can listen to the voice of a fictional actor based on The Two Coreys . Lisa promises to stop increasing the family 's phone bill , but continues to make calls to the hotline from such places as Doctor Hibbert 's office and a telephone at Springfield Elementary . After Principal Skinner catches her , Marge suggests that Lisa try to go until midnight without calling the hotline ; if she can do so , she will have conquered her addiction . Although tempted throughout the rest of the day , Lisa beats her addiction . 
