Early morning freak
A person who can't sleep at night and then sleeps like a log during the day. Usually young and stupid.
My friend couldn't sleep because of his dumb phone and now he's snoring at 10 a. m.
She stayed up all night because of her drama and now she's passed out on the floor.
My brother couldn't sleep and now he's taking a nap at 9 a. m. like it's his job.