1 definition by Sara and Linda

Top Definition
A condition commonly seen in young children caused by lack of sleep due to an overnight. Usually consists of irritability, whining, crying, fatigue, fighting with siblings and parents, and an overall baditude.
Sara: "Mom, what's wrong with Elliot?"
Mom: "He slept over at Sam's last night. Must be a case of overnitis!"
by Sara and Linda June 19, 2006

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×