Boil the water and pour it in a large measuring cup with a spout.
Sprinkle the gelatin over the water, and let the gelatin bloom for 15 minutes until completely dissolved.
Stir well and add the Bailey's Red Velvet Cupcake. Stir to combine until well mixed.
Add the sugar and the food coloring and stir until sugar dissolves.
Place shot glasses on a small tray or cookie sheet, and pour the gelatin mixture into the shot glasses, filling them. Place in the refrigerator for at least 3 hours.
Place the frosting in a bag in the refrigerator to cool.
When ready to serve, remove the Jello shots from the refrigerator, and the frosting.
Pipe a generous amount of frosting on the tops of the Jello Shots serve, and enjoy.