Answer:
While you were folding a letter you got me. Usually you will do whatever it takes to avoid me but now you can't help but find me.
I am an object which is used in baseball during the day I can't be seen at all
I am the kind of nut that is empty at the center and has no shell.
I am a seed with three letters in my name. Take away the last two and I still sound the same.
My keepers feed me colored balls. With sticks they store on my den walls. Sometimes I store them in my pouch. Sometimes deep in my belly; ouch!
I flow from the Homerβs mouth when he sees doughnuts.