sack out(redirected from in the sack)
to go to bed or go to sleep. It's time for me to sack out. Let's sack out early tonight.
Go to sleep, go to bed, as in We sacked out about midnight. This slangy idiom is a verbal use of the noun sack, slang for "bed" since about 1940; it alludes to a sleeping bag and appears in such similar phrases as in the sack, in bed, and sack time, bedtime.
To sleep or go to sleep: After a long day at work, I sacked out on the couch.
in. to go to bed or go to sleep. (see also sacked out.) It’s time for me to sack out.