The idiom hit the sack, or sometimes hit the hay, means to go to bed in order to sleep. People use the phrase when they are tired and ready to end the day.
The expression comes from the time that beds that were filled with sacks of hay, straw or other soft material. Lying down on the sack to sleep eventually became a casual way of saying someone was going to bed.
The expression comes from the time that beds that were filled with sacks of hay, straw or other soft material. Lying down on the sack to sleep eventually became a casual way of saying someone was going to bed.
I am exhausted after the long drive, so I am going to hit the sack.