Cows stomach lining is known as tripe where I come from. Delicious cooked with onion and tomato, a bit like calamari (squid, another Ew no doubt). My mother eats raw tripe soaked in vinegar and there's even a Tripe Club for aficionados in Melbourne.
But the point is Mo, you thought it was tasty until you found out what it was. It's all in the mind.