A girl who's parents want to name her after a celebrity, but also want to make it original by adding a fun suffix. They name their child "Cher" in the hopes that she will one day become a gay icon (or gay) and the "ah" at the end is intended to make people either question this, realize this was the case all along, or run away in terror.
OHMYGODCHERAHHHHHHH!!! She's coming to lez out with me!!