Cut each of the Lemon (6) in half, and carefully juice them without tearing the peel.
Hollow out each half, taking care not to puncture the peel. Place the halves in a muffin pan to help keep them stabilized while setting.
Make Jell-O® Sugar-Free Lemon Gelatin (1 package) according to package's directions, except in place of the cup of cold water, substitute Lemon Meringue Vodka (3/4 cup) along with Water (1/4 cup).
Transfer to something with a pouring spout (such as a liquid measuring cup) to make for easier filling. Fill each lemon half and refrigerate for several hours or overnight.
Once the jello is completely set, use a sharp knife to slice into wedges and serve.