Fill a small cocktail glass with ice. Pour your choice of cranberry juice (for a black widow Halloween cocktail) or pulp-free orange juice (for a spooky screwdriver) over the ice. Gently layer black vodka over juice.
Alien Brain Hemorrhage Cocktail: Fill a shot glass halfway with peach schnapps. Gently pour Bailey’s Irish Cream on top. After the shot is almost full, carefully add a small amount of blue curacao. After it settles, add a few drops of grenadine syrup.