A: Did you watch “Doctor Strange?”

    B: Not yet.

    A: I bet you’ll like it.

    B: Yeah? I heard that it stars Benedict Cumberbatch.

    A: Both the character he played and the entire story are off-the-wall. Quirkly humorous, the film also has cool visual effects.

    Note: This slang term means “markedly unconventional, bizarre, oddball.” In certain sports such as handball and racketball, a player hits a ball against the wall. When it comes off the wall, one has no idea where it is going. Therefore, out of this, this expression implies unpredictability. It’s similar to “off the grid.”