My sister had me convinced for over a year that my favourite thing in the world, at the time, peanut butter was made with glue. It was all I could taste after that. Of course it didn't help that our mum bought the cheap and nasty stuff. To this day, I will only eat Kraft brand peanut butter.
It still tastes like gooey cardboard paste to me.
I hated Bananas and Pepsi and Coke were too fizzy for me. and I think I liked Peanut Butter, but things completely flip from childhood to well....whatever I'm at now.