Muni Long is throwing shade at Mariah Carey and it’s not going over well with the fans. The “Delulu” singer is promoting her new single with a skit posted to her Instagram account, featuring a Mariah impersonator coming in to audition for Muni by performing the song. The impersonator tells Muni that she should sing the song the way she just did it. After she walks out of the room, Muni stamps “delulu” on Mariah‘s headshot. At the end of the clip, Muni says to the camera, “I just don’t like when other people sing my songs.” So, where…