I finally found how to make my wife ask for a Threeway.

Prepare a shaker full of ice then add the Tequila, Cointreau (orange liqueur), Amaretto, Spiced rum, and the Lemon juice.

Shake well and pour into martini glasses. Should make 2 servings

Use good gold tequila. I prefer Sauza Conmemerativo. If it's too sweet add a little more lemon or a little less Amaretto.