sleep like a log
Also, sleep like a top. Sleep very soundly, as in I slept like a log, or She said she slept like a top. Both of these similes transfer the immobility of an object to that of a person who is sound asleep (since a top spinning quickly looks immobile). The first dates from the late 1600s; the variant is newer.
THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?
Words nearby sleep like a log
Example sentences from the Web for sleep like a log
ROME — What does it take for a Hollywood A-lister to get a private audience with Pope Francis?Pope Francis Has the Pleasure of Meeting Angelina Jolie for a Few Seconds|Barbie Latza Nadeau|January 8, 2015|DAILY BEAST
So I just patted him kind-like on the shoulder and sat down.
Lee would stay up late, unable to sleep from the pains he had in his back.
Yes, Byrd—dead four-and-a-half years now—was a Kleagle in the Ku Klux Klan.Steve Scalise and the Right’s Ridiculous Racial Blame Game|Michael Tomasky|January 2, 2015|DAILY BEAST
By the time it concluded with a sing-a-long of “XO,” Beyoncé had done the rare thing.Bow Down, Bitches: How Beyoncé Turned an Elevator Brawl Into a Perfect Year|Kevin Fallon|December 31, 2014|DAILY BEAST
Now-a-days it is the bankrupt who flouts, and his too confiding creditors who are jeered and laughed at.Glances at Europe|Horace Greeley
May looked along at the dimpled grace, And then at the saint-like, fair old face, “How funny!”
He felt himself the meanest, vilest thing a-crawl upon this sinful earth, and she—dear God!St. Martin's Summer|Rafael Sabatini
All that scientific bric-a-brac in the cupboard had far better be thrown away.The Salvaging Of Civilisation|H. G. (Herbert George) Wells
His strong legs and his broad, spade-like feet helped to make him a fine swimmer.The Tale of Grandfather Mole|Arthur Scott Bailey