This guy was perverted and this mistress did not feel like she needed to let him off the hook. She had to do what she does to people like him and that is why she chose to shit on him. He had to eat her shit and he had to drink her pee. That is why she did what she does every time she faces someone like him. It worked.
Alexa sings happy birthday to you and dances around in her bra and panties. She lights a candle and you are surprised by your birthday gift. She gets nude for you and spreads her legs over the candle. Suddenly she starts shitting all over the candle. The pile of smelly and messy turds puts out the flame and she holds it up so you can get a closer look at it.