The most disgustingly sweet chocolate product is without doubt the Creme Egg.
How anyone eats that shit is beyond me.
Back when I was working in Liverpool, my workmate offered me £5 to eat a box of 6 Crème Eggs in the time it took to walk back from the shop to our work (probably about 300m).
I managed it, but would definitely advise against doing it even if you are offered £5 as I felt like shit for the rest of the day and probably gave myself diabetes in the process.
I’d hold out for at least a tenner.