What did stifler really eating in American pie 3?

In "American Pie 3: The Wedding," Stifler is famously shown eating a piece of pie that is humorously implied to be an inappropriate and risqué reference. The scene is meant to be comedic and plays on the film's overall theme of teenage awkwardness and sexual humor. While the pie is simply a prop for the joke, it embodies the film's irreverent tone and Stifler's outrageous character.