Lady Gaga hosted SNL after “Joker: Folie à Deux” failed to perform well. She joked about the sequel and promised not to sign on for “Joker 3”. Gaga showcased her acting talent during her opening monologue, promoting her new album, “Mayhem.” Lady Gaga took the SNL stage after her movie “Joker: Folie à Deux” flopped at the box office. She