Pour peach schnapps into a shot glass until about two-thirds full.
Slowly pour Bailey's Irish Cream in a thin stream over the peach schnapps. Wait a few seconds for the cream to curdle.
Once the cream has curdled and the "brain" has formed, it is time to add some "blood" to make the "brain" hemorrhage.
Slowly pour grenadine over the curdled cream. Ideally, this should be done is a slow circular motion so that the "brain" will appear to be bleeding from every direction. As the grenadine falls to the bottom of the glass (specific gravity), some of the curdled cream will get pulled along making the drink look even more disgusting and fun.