Yes, sleep drunkenness is a thing. If you have a ton of trouble waking up, then act in a confused and odd manner once you do—maybe you answer the phone instead of turning off the alarm—you might have this sleep disorder. Some of the afflicted fall back asleep with no memory of being awake, while others stay up and confused for a half hour or more.
READ MORE: Sleep Drunkenness: You Might Have This Weird Sleep Disorder