go on about

• go on about: べらべら喋る

---

• I tell you, that dragon's the most horrible animal I've ever met, but the way Hagrid goes on about it, you'd think it was a fluffy little bunny rabbit.
  （ほんとあのドラゴン、あんな恐ろしい生き物見たことないよ。なのにハグリッドは毛がふわふわの子うさぎちゃんみたいに言うんだから。）
  J. K. Rawling, Harry Potter and the Philosopher's Stone, Bloomsbury, p. 173