hit the sack
idiomE

To go to bed or to sleep, usually because one is tired
  • 1After a long day at work, I'm ready to hit the sack.
  • 2It's getting late, so I think I'll hit the sack.
"Hit the sack" means to lay down in bed and fall asleep, typically because you are feeling tired. It is a casual way of saying that you are going to bed. So, when someone says they are going to hit the sack, it means they are going to sleep.
Card
Remember, "hit the sack" is an informal expression. Use it with friends and family, but in formal situations, it's better to say "I'm going to bed" or "I'm going to sleep."
in the study lounge
Late Night Study Session
Christopher
Wow, we've been studying for hours. I'm exhausted.
Kimberly
I know what you mean. I think it's time to hit the sack.
Christopher
Good idea. We need to be fresh for tomorrow's exam.
Kimberly
Exactly. Let's pack up and head out.
Show More…
Similar to "hit the sack":
  • 1go to bed
  • 2turn in