The past tense of "clonking out" (the state of being very tired or made tired); having fallen into deep sleep.
"Yo, bro! I 'clonked out ' last night!"

"Really?! That's intense!"

"Right?!"
by IolaDavis March 11, 2016
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Being extremely tired you could sleep right then and there. Usually heard from Australian youth.
"Today was so tiring, I could clonk out right now"

"Dude I'm so ready to clonk the fuck out"
"Same bro"
by cheaux May 6, 2014
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A versatile word, can be used to describe something/ someone who has: stopped working, is dead, or fell asleep.
“God, the damn computer clonked out on me. I should’ve gotten the newer one.”
“I had to work all day today. I’m so tired I might clonk out.”
“Yeah, my uncle clonked out last week. Poor guy just couldn’t outrun those wild zebras.”
by Get Lego Eda’d August 12, 2021
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