Early morning freak
A person who has no life and can't sleep at night, then sleeps like a log during the day. Usually a kid or someone who's a disaster.
My sister stayed up until 3 a. m. watching TikTok and now she's sleeping like a baby at 11 a. m.
He couldn't sleep and now he's taking a nap at 9 a. m. like it's his job.
She stayed up all night because of her drama and now she's passed out on the floor.