Thoughts on title...

Because my book is quite sarcastic. Illustrating the ridiculousness of the thought that listening to metal music makes people violent and aggressive. I really want my title to be witty and to the point and shows the sarcasm. The books about her listening to metal music so I want metal to be in the title somewhere. 

Here's a photo of the different titles that I was trying to come up with: 

In the end I have decided to go with 'Nannas Gone Metal' ....I think that this really goes well with the images and what I am trying to say. I think that the word Nannas goes a lot better than Grannies. Sounds a lot smoother. Also, like the use of the word 'metal' as sounds like it should say mental.