I begin with a beginning, which is followed by the opposite of followed. You must be surprised!

I’m round and sweet, I tempt your eyes, but I’m not a pie.My center is empty, my edges are not. I’m best enjoyed fresh and hot. Homer loves me as much as Duff, but as much as you buy of me, there’s just never enough!

As a whole word I'm a grungy little spot, a place on your body either feared or sought. Take away my first letter for a Southern clue, that someone's not about to do the thing you'd like them to.

What can sit in a corner but still travel around the world?

Humble and nice if you say me once, Not chant if you say me twice, I am no boast of me me me, Yet I share fast on every screen.