"Maddie gets covered in reeces peanut butter cups"
In this scene, Maddie is stood in the bath wearing some white shorts and an orange tank top. She tells us how much she loves Reece's peanut butter cups and she opens a packet of them and eats a peanut butter cup and tells us how nice it tastes. She then sits in the bath and gets a bucket of Reece's peanut butter cups (which had been melted and watered down with hot water and allowed to cool) poured over her. Watch out for the scream! Then she has some double cream and custard poured over her.
Maddie seemed to enjoy this, apart from the coldness of the watered-down Reece's peanut butter cups, hence the scream.