Don't panic! I do not, in fact, actually chew, swallow, and consume books. There is no paper in my stomach (as far as I'm aware!)
But I taste books.
Not just books - words, sentences, paragraphs. All of them roll around on my tongue with their various flavours.
And for a long time, I figured everyone else was the same. It's only in recent years that the sneaking suspicion has crept in - other people don't taste words.