Top Definition
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.)
Oh dude, is it 2 o'clock already? Yeah finna get sleepy high...
by Nynja Boy October 23, 2010

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