In a bowl, crush pretzels and combine with sugar and melted butter.
Press into the bottom and sides of pie pan.
Place into freezer to chill while preparing the filling.
In a seperate bowl, mix sweetened condenced milk, lime juices and alcohol together until well combined.
Fold in whipped topping.
Pour into prepared pie pan.
Chill 3-4 hours in the freezer.
Garnish with lime zest and a slice of lime.