Preheat the oven to 350°F. In a medium bowl, stir graham crumbs, sugar, and melted butter.
Press the mixture into the bottom and up the sides of an 8 or 9-inch pie pan.
Bake in the preheated oven for 8-10 minutes. Leave the oven turned on, and let the crust cool as you make the filling.
In a medium bowl, whisk sweetened condensed milk, lime juice, and egg yolks until smooth. Pour the batter over the crust.
Bake in the preheated oven for 12-15 minutes. It should look somewhat set but still have a wobble to it. Remove from the oven and cool fully. Then cover the top and refrigerate for at least 3 hours before serving. Pour the batter over the crust.
Top with whipped cream, lime zest, and lime wedges.