overnightus 

Its the sickness that comes will being drunk, but it doesn't hit you till you wake up. Not to be confused with a hangover.

im regretting last night, i didnt get sick but overnightus is kickin in :/.

overnightus by thaJoKer June 29, 2010

overnight activist 

A person who, upon seeing a political message on a social networking site, instantly becomes a die-hard supporter despite knowing nothing about the subject.

Jackie -OMG, I just saw KONY2012. Save the Children!!!!
Brenda -OMG me too. It's so sad that this is happening in Uganda.
Informed Individual- You know this has been happening 26 years and that the Ugandan gov did the same thing to get in power... overnight activists

overnight activist by deadseenscroll June 20, 2012

overnight snub 

When you're messaging someone on a dating app and having a great conversation, yet after a night passes they no longer answer the next day.

Guy 1: "Dude I've been messaging this girl all night she seems great. I think this could actually lead to something"
Guy 2: "Bro that's awesome"
*Goes to sleep, 1 night passes*
Guy 1: "She's not answering anymore, wtf I totally got the overnight snub!"

overnight snub by BananaBoy0517 October 30, 2020

overnight sensation 

When a certain unknown person becomes famous in a supposedly short amount of time, usually a day or a week.

Miley Cyrus was an overnight sensation after she was cast for the show Hannah Montana.

overnight sensation by anthony binas March 20, 2008

Six trillion years and overnight story 

A song made by kemu featured in almost every single rhythm game and it is always one of the hardest song if not the hardest song in the game

I died at six trillion years and overnight story in less than 2 seconds

Six trillion years and overnight story by Sora-N November 10, 2020

overnight oats 

Late night sex.

Tom's in a good mood today - he must've had his overnight oats.

overnight oats by El Mattador May 3, 2016

overnight baby sitter 

a woman who is a stripper but doesnt want her friends or famliy to know she is so she tells them shes an over night baby sitter

so what does your daughter do for a living again? oh shes an "overnight baby sitter"

overnight baby sitter by dylanskillin December 3, 2009