jumore
A person who was partially held back and is taking classes from one grade level and another. In this case, a combination of a junior and a sophomore.
Chris is still in my junior English class but I hear he's in a sophomore homeroom. I guess he's a jumore now.
jumor
n., portmanteau consisting of Jewish + humor
I hate Seinfeld; jumor just isn't my thing.
jumor
Jewish "schtick" humor
Jerry Seinfeld has an incredible sense of jumor.