An alt. pronunciation for the music artist Usher.
Southern Black American slang... poss. creole inf.
Also similar to 'right thuur'in its derivation from standard english to an urban term in both pronunciation and locality.
When you change how your voice sounds while talking to a female you are into. You end up sounding similar to how Usher talks at the beginning of his songs, such as Burn or Nice & Slow.
Last night everybody was laughing at Victor cause he was using his Ushervoice while hitting on some girl.