 The rivalry between Rey Mysterio and CM Punk was continued from several previous pay @-@ per @-@ views . After months of feuding , Mysterio challenged Punk to a Straight Edge Society Pledge vs. Hair match at Over the Limit . Had Punk won , Mysterio would have joined the Straight Edge Society , Punk 's faction which promoted the straight edge lifestyle . Had Mysterio won however , Punk agreed to have his head shaved . On May 14 , Mysterio and Punk faced each other in a singles match , but the Straight Edge Society ( Luke Gallows , Serena , and a mystery masked man ) interfered and attacked Mysterio . The following week , Mysterio interrupted an initiation ceremony , in which Punk was shaving the heads of three men to induct them into the Straight Edge Society , and mocked Punk , claiming everyone would be laughing at Punk when he was shaved bald at Over the Limit . Later that night , Mysterio teamed with Montel Vontavious Porter to defeat Punk and Gallows in a tag team match . 
