Pour schnapps into a large shot glass (the measurements may be off a bit, you can experiment). Slowly pour irish cream into schnapps so that it basically forms a brain in formaldihide. Finally, dribble the grenadine (dribbling onto a spoon then into the schnapps helps) directly into the center of the irish cream mass . As the grenadine amount slowly increases it will eventually burst through the irish cream creating a hemoraging brain.
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