User blog comment:CalzoneManiac/Censored 11/@comment-ClassicNickelodeon Fan 1-20130718214310

From Loonipedia

It's very possible that they could, but the demo of Adult Swim (18-34) may not want to see cartoons from the 30s and 40s. Also due to the racial overtones, it could still be offensive to audiences of [adult swim]. Though a little warning at the beginning of the showing could be enough to clear that.