When you sprout horns and ram your pee pee into a girl's vajayjay. All the while, you are clanking your horns with the girl's horns because she goes crazy when you bleat like a little goat man.
Dude. Last night I totally told Emily "girl, I'm gonna ram you like a sheep. She didn't believe me at first, but soon was satisfied. She wouldn't stop calling me a billy goat gruff.
This is another way of saying you slept really well. People feel like they had good sleep when they obtain deep sleep. Deep Sleep is one of the 4 sleep cycles and some think it is one of the most important. Since logs do not move by themselves once placed on the ground, to sleep like a log is sleeping so good that you do not move.
A similar saying to "sleep like a log" is "slept like a baby". Both are ways of saying you slept undisturbed throughout the night.
The opposite is when someone says they tossed and turned all night. This is not sleeping like a log. You are moving all over the place which means you are not getting quality sleep. It is likely you are getting light sleep vs deep sleep. This is when people wake up still feeling tired.
Oh, you can't sleep? Take some melatonin and you willsleep like a log.
or
Dang, I can't believe it is morning already. I sleeping like a log last night.
"Sleep like a Russian" (catchphrase), means sleeping very tightly. The catchphrase comes from the fact that a Russian can sleep very deeply because he is in the knowledge that his country is the biggest country in the world. He therefore believes that no one and nothing can harm him, which gives him a deep sleep.
This idiom can be further used in various contexts to express a person's high level of confidence and composure towards what is happening around them.
"Did you sleep well?" "Oh you bet I did, I slept like a Russian!"
"Do you usually have a good nights sleep?" "Yes, I always sleep like a Russian"