Lemonade Pie

This is easy and yummy, but only if you like the sour taste of lemonade!
Lemonade Pie

1 can sweetened condensed milk
1 can frozen lemonade concentrate
8 oz whip cream
1 graham cracker crust

Mix the first three ingredients and pour into crust. Freeze for at least 4 hours. Thaw for about an hour before serving.