Answer:
I was was before was was was.
I give people a huge fright but at the end I'm sweet. I normally celebrate at night when there's less heat.
I am not a toy though many use me for pleasure. I have a butt but I cannot poo.
I am owned by the poor, the rich do not need me. If you eat me, you will die! What am I?
I'm the source of all emotion but I'm caged in a white prison.
Lynn likes grapes but not potatoes. She likes squash but not lettuce, and she likes peas but not onions. Following the same rule, will she like pumpkins or apples?