Yes, it is an older idiom meaning go to bed. Hit the sack is more commonly used (US)
15 novembre 2019
2
0
0
Neither is super common, but they're both used. I wouldn't think anything odd of it if you said that you were going to hit the hay or hit the sack, as the other commenter mentioned. It's definitely very informal though.
15 novembre 2019
1
0
Vous n'avez pas encore trouvé vos réponses ?
Écrivez vos questions et profitez de l'aide des locuteurs natifs !