You've never eaten an upside down pie. Neither had I.
Step 1: Why does inverting Pi make me feel like a heretic?
Yes, pi is like a math deity and it commands all the respect it deserves. Disrespecting Pi is a good way to bring down a Mathematician Fatwa on my head. While I wait for such white-hot nerd fury I will comfort myself with some pie.
First prepare two pie crust rounds
Then make this incredibly easy Filling
1.5 cups milk
3 Tbsp corn starch
0.5 cup sugar
2 egg yolks
0.5 tsp. vanilla
2 cups crushed pineapple
In a double boiler heat the milk, starch, sugar, eggs and vanilla. Whisk it around until it thickens. This took 15 minutes for me. Fold in the pineapple. It smells good the whole time. Mmmmmmm
But don't get too distracted by the beautiful smell of vanilla and warm pineapple. The next part is the good bit.