"Eating" Oranges

I was eating lunch in the kitchen when Amy walked into the kitchen, grabbed an orange, and sat down at the table. After peeling it, she takes a slice and puts it in her mouth. About 30 seconds later, I hear a splat. I look up from my plate and ask, "what was that?"

Amy: What was what?

Me: I thought I heard something hit the floor. Something did! Look! Echo (the dog) is eating something! Are you feeding her? Don't do that!

Amy: I'm not!

I go back to eating and a minute later I see Amy whip her head sideways and make a grotesque spitting sound; a chewed up piece of orange flies from her mouth and lands with a splat on the kitchen floor.

Me: Did you just spit out a piece of orange?!

Amy: No....BWAAHAHAHAHAHA YEAHH!!

Me: Why? Don't do that! Just eat it normally!

Amy: That is how I eat it normally!

Me: You chew it up and spit it out for Echo to eat?

Amy: Yeah.

Me: Why?!

Amy: 'Cause I only like the juicy part. I chew it up until there's no more juice flavour left, then I spit it out. Echo likes to eat the gross part.

Me: Echo likes to eat anything, but that doesn't matter! You're wasting so much of the orange!

Amy: I'm only wasting the gross part.

Me:Wait...have you always eaten oranges like this? For your whole life?

Amy: Yeah, it's how I normally eat them. Except when I'm at other peoples' houses, or when people are looking at me. Then I have to chew it extra much and just force it down because otherwise they'll see.

Me: So you know it's weird, then, right? Chewing up oranges, then spitting them onto the floor and having the dog eat your chewed up food?

Amy: Only for other people.