Stir together boiling water and jello in a bowl until jello is dissolved.
Stir in cold water and Fireball.
Pour mixture into a large liquid measuring cup. Fill 2-ounce plastic shot glasses 2/3 of the way full.If you don't have a large measuring cup with a pourable spout, spoon the mixture into the shot glasses.
Refrigerate for 2 hours or until set.
Decorate with whipped cream, sprinkles, and red hots.