Combine pineapple juice, lemonade, and Sprite together in a 2 quart pitcher.
32 oz pineapple juice, 24 oz lemonade, 18 oz Sprite
Add blue curacao syrup and stir until well mixed.
1 tsp curacao syrup
Serve over ice (or heart shaped ice cubes - see notes).
Serve over red juice heart shaped ice cubes made out of a red drink (cranberry juice, fruit punch, or strawberry lemonade) for a fun festive touch. Serve the punch over the ice cubes in individual glasses rather than adding the ice cubes to the large pitcher. The red liquid (no matter what it is) will begin to slowly change the color of the Grinch punch and ruin the effect in the large pitcher.Add lime sherbet for even more of that Grinchy green color.