
Nod off
Unintentional Sleep
Used when someone falls asleep without planning to, often due to exhaustion.

After the long drive, I nodded off on the couch.
Subtly Humorous
It can mildly amuse listeners as it paints a picture of someone's head nodding as they fall asleep.

During the boring lecture, I caught myself nodding off.
Socially Embarrassing
Implies a potentially awkward situation, like falling asleep at work or in public.

He was embarrassed after he nodded off in front of his boss.
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