The pizza part is an old 4chan thing, and we know Epstein was involved with 4chan and its creator, Moot. “Cheese Pizza” = cp aka csam. It’s why they started the pizzagate conspiracy - it was a joke referencing this.

I assume grape soda is code for black children because of the racial association and pizza is white children - could mean girls/women of any age, though.

They also talk about slicing pizzas. I assume that means taking their virginity, but it could be worse than that.