Combine graham cracker crumbs, melted butter and sugar together in bowl. Reserve one spoonful of crumb mixture to sprinkle over finished pie (optional).
Press into 9-inch pie pan. Bake at 350 for 8-10 minutes. Cool completely.
Pie Filling
Whisk pudding mix and milk together until smooth.
Fold in whipped topping (reserving a large spoonful to spread over pie---optional) and lemonade concentrate.
Pour filling into cooled graham cracker crust.
Spread reserved whipped topping over pie and sprinkle with reserved crumb mixture.