I have undoubtedly had a fig biscuit and it is at least possible my mother fed me some sort of fig duff in hot custard. I'm quite certain I've never actually put my fingers onto a fig and lifted it into my mouth, the number of intolerable aspects to that are overwhelming. I have no idea how anyone could bring themselves to do it.
The notion that someone might deliberately eat any part of a lobster is repellent. Lobster has not and will not form any part of my diet. Eww lobster.
I could go on.
Sago or tapioca. It was utterly slimy when served as compulsory fodder at school and I've avoided both ever since. I would now walk out of the room rather than be polite and eat any. I quite likely include "sweet potato", whatever a sweet potato might be, in the same basket of impossibilities, I wouldn't know, I've never been near one. I've no intention of ever finding out. I'm a tolerant sort of chap but there are limits.
I have so far avoided absolutely everything one might find at an East End eel-vendor's barrow. That includes oysters, whelks, mussels, scallops or any other damned gastropod whether of the sea or the land. Bloody seafood, all of it. Fish are a different matter but if it lives in water and isn't a fish I'm not interested. That goes for octopus too. How people can behave like that is a disgrace.