gulp down

verb3

1. •
   To drink very quickly, swallowing large quantities of liquid at a time.

   • I am so constituted that I absolutely must gulp down the juice of three oranges before confronting the rigors of day. — 1957
2. •
   To eat very quickly without chewing the food properly.
3. •
   (figurative) To believe without questioning; to swallow.

   • The old man […] glibly gulped down the whole narrative. — 1755