Wiktionary
sacked out
(context idiomatic English) sound asleep, usually from a healthy exhaustion. v
(en-pastsack out)
Usage examples of "sacked out".
He had a couple of tickets for the Reds-Cardinals game that night, but I took a raincheck and sacked out at about 8:00.
After all, I owned half of the Woof & Warp, his arts-and-crafts shop, and had sacked out in the back room in the past.
For a couple of weeks, Randy couldn't come home in the evening without finding Charlene sacked out in front of the TV with a bowl of popcorn and a Dictaphone, watching a video of a straight razor being drawn along wet, soapy flesh.
In deference to the fact that somebody might walk in, I sacked out wearing my underclothes.