Slogan for a chocolate bar?

Hi,

So I'm making a new chocolate bar for my A-level Business coursework. My proposal is a two in one chocolate bar, for example; Cadbury dairy milk and Cadbury Caramel attached to eachother. Could someone give me a very strong slogan that will stick to the brain immediately? That is suitable for different types of audiences; females, males, childeren and elderly?

This is very vital for the success of my presentation as I want to end with a slogan. Thankyou!

I randomly made it up but I don't know if it already exists: 'double the fun with the new 2-in-1'