excellent. This is a jim-dandy knife. Where'd you get it?Tom: I'll meet you at six, OK? Charlie: That'll be jim-dandy.
Jim Crow
(American)
a situation that existed until the 1960's in the south of the US, when black people were treated badly, especially by being separated from white people in public places
Usage notes: Jim Crow was the name of a black character in a 19th century song and dance act.
Jim Crow meant there were no black kids in white schools. (American)