Lemon jello adds a bright hue to this drink along with pineapple juice and optional vodka make this drink perfect for adults and children that will put the 'sting' into your Halloween party.
To a large jug or container, add the jello mix. Pour in 1 cup boiling water, stir until the jello dissolves. Add 1 cup cold water and mix. Add the pineapple juice and chill.
Add the vodka and serve.