It's time to hit the hay!
The term comes from an old english expression. Bed were usually loose hay/straw, in 'wealthy homes' hay/straw in sacks. Term ment 'to go to bed.'
First was 'hit the hay,' the second refers to 'hit the sack.'
Originally Posted by 10000kbps
"hit the hay" is an idiom meaning "go to bed in order to sleep"
mattresses used to be stuffed with straw or hay.