You can find me in burgers. You can find me in tacos. I'm not a vegetable. But, I'm also not a fruit. I'd ask you to get into the meat of this riddle. But that's not relevant either, is it?

I reckon that this riddle is simply cooked atop itself.

By myself, I might be literal or I might be slang, but in both cases I'm often unwanted. Simply add a ball, and I might be beloved. Take off the ball and add a y, and I become unclear. When I'm Hot, many people like to watch me. Pick me off someone's suit and they might thank you. If you're still me-y about what the answer could be, check out the additional hint.

If you like apples, you can do this with friends. But if you're in prison, you'll have to do it yourself.

I eat the leaves of a specific tree, They're toxic, even to baby me. Serve them on a plate and I won't understand, I don't recognize them and starve where I stand. To save energy, I nap around the clock, I can't do much else, my brain is smooth as a rock.