the real McCoy(informal also US the McCoy / something or someone that is real or genuine; something or someone that is not a copy or imitation: Is that a fake gun, or is it the real McCoy? [=is it a real gun?]; These diamonds look like the real McCoy, but they could be fake; To help her play the role of a lawyer, the actress studied with the real McCoy [=with an actual lawyer]; Maybe he's the McCoy, and maybe he's not. Dominator_Salvator)
ace(accomplish something with success. The idiom ace it, however, originated as student slang for getting an "A" on an exam or in a course but soon was extended to other successful accomplishments: I'm sure he'll ace it when he takes that bar examTaras)
