I've been looking for Jackinese courses for weeks, glad I finally found one. DuoLingo customer support even asked me if I was on drugs at one point, for some reason.
It's broken. I put "Hello sir" in the English end and it came out with "Heya! sir" instead of "Heya! shir". But otherwishe, it'sh the fourth fwipping mosht amazing thing in the univershe.