The point of no return. That point when your past your limit of consciousness late at night, but you are still asleep. When you're so sleepy you are in a state of euphoria, kind of like being high. Best results exhibited at 2-3 a.m. with a friend who is also sleepy high. (Not responsible for any damges done to readers or reader's houses.)

When you haven’t slept in so long but can’t fall asleep that you start acting like you’re high even if you don’t know what it’s like being high