You have to pick:

Do I still keep my mind? If not this is basically just an unusual way to die IMO. I'll assume I've still got my mind.

Clarify:
Eating a banana-flavored slug would be okay, but eating a type of slug that grows on banana plants would just suck.

it says regular, and my regular cat doesn't retain it's human brain.

A banana slug is a very large slug with yellow and black markings that make it look like an overripe banana. They live on the west coast of North America.

So, basically, you are eating a particularly large slug.