Summary: Double the Danger and Zero Zucchini.

This is likely the title of a book or a story. The overall theme is probably a mix of danger and comedy, as the two phrases have opposite connotations. The story may involve a situation where the danger is heightened in some way, but the characters are able to find humor or moments of levity in the midst of it. The reference to zucchini may be a tongue-in-cheek nod to the idea of healthy eating or a mundane detail that contrasts with the excitement of the danger. Ultimately, without more context, it's difficult to say for certain what the story is about.