Metaphor medley - (also metaphor marathon)
two or more metaphors strung together in the same sentence. This is effective when the two metaphors are in contrast or a dichotomy. However, when they are similar, they give the reader a choice and they tend to slip off the path and the story. It also gives the appearance that the author can't make up their mind and is pushing a task off to the reader. Tsk Tsk. A metaphor medley can be effective, especially when expressing dichotomy, irony and comedy. It's also effective in dialog. However, authors should only use or retain when it works. If in doubt, cut one out and run.
Edward C. Patterson