Question: In conversation, when someone says they appreciate my brain, I need an effective comeback. I was going to say:

> 
> "I hope that you are not turning into a zombie with your love for my brain."
> 
> 
> 

But I feel that *"turning into"* is not a sufficiently **vivid** verb to use.

What verb should I use when someone turns into (or possibly might turn into) a zombie?

I want the verb to tell a bit of the story by describing the what and why of zombies.

Answer: 
A few words come to mind:

* transform
* convert
* evolve
* devolve
* grow
* mature
* adapt
Morphing had already been mentioned, but one can also try to metamorphose into zombie (just the same as larva metamorphose into butterflies).

Freedictionary had got a suitable usage example: <http://www.thefreedictionary.com/metamorphose>