sacked out
Sound asleep, usually from a healthy exhaustion.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“The tired dog is sacked out on the rug.”
“My roommate is sacked out after working the night shift.”
“The baby is finally sacked out in her crib.”
“After hiking all day, the campers were sacked out in their tents before the sun even set.”
“You will probably find the kids sacked out on the sofa after their long afternoon at the swimming pool.”
“I was so tired from the flight that I stayed sacked out until noon the next day.”
“The busy chef was sacked out in the breakroom for twenty minutes before the dinner rush started.”
“Exhausted by the grueling demands of the marathon, the athletes remained sacked out in the locker room long after the race had concluded.”
An outgrowth of the earlier idiom *to hit the sack*, meaning to lie down to sleep.
The term may have been influenced by other senses of *to sack*, such as to tackle or to pillage, as well as by *to sock*, meaning to hit or to slam. These associations provide an implication that sleep has been thrust upon a person, rather than sought.
Last updated August 10, 2026