Nicole Delian from Pennsylvania slept for 64 days straight! She is a 17-year-old girl, who has "Sleeping-Beauty Disorder" also known as Kleine-Levine.
It is actually a real thing! It is very common in adolescents and affects about 1,000 people around the world.

She once slept from November through January, forcing her to miss Thanksgiving, Christmas, and New Years! She normally sleeps about 18-19 hours A DAY! And once she finally does wake up to eat, she barely remembers it and is considered to be "sleep walking".