daeum
Daeum is the sound your brain makes when it's tired. It's like saying 'next' when you're trying to fall asleep but your brain is still playing video games.
My brain said 'daeum' when I tried to sleep and it kept playing Fortnite.
He said 'daeum' and stayed up until 3 a. m.
She said 'daeum' and ate cereal for dinner.