Mostly made with Hypnotic.Sounds like a shot with cream or something close used to make it look like a brain is inside. I'll bite.
Lots of ice, 1/2 hypnotic, add Malibu up to 3/4 or so of the glass, bit of pineapple juice on top and a tiny splash of some real red alcohol for the coloring. The name of the red stuff escapes me at the moment though. But you don't use much of it. Starts with a D maybe???