hag night 

Slang for an informal get-together of close female friends whereas they staunchly agree to attend without any makeup or styling their hair and they tend to show up in their most comfy sweats.

Sometimes there is that one vanity-driven person who comes waltzing in to hag night who has clearly broken the firm but unspoken rules requiring no primping and it is sadly something that keeps this socially maladroit person from any possible future invitations to hag nights.

hag night by Dr Bunnygirl June 7, 2023

Mighty-night 

How to send off your mates with honour and glory before they drift off to la-la land. Ideally delivered in a near-offensively Mary Poppins cockney.

"Nighty-night."
"The fuck?! I don't get a 'mighty-night'? Do I mean nothing to you?!"

Mighty-night by nwtraveler July 11, 2023

Loko Overmann Night 

The act of drinking to much 4 Loko which results in an individual acting like a complete fool and waking up in the hospital. Named for the first man who dared to drink to much 4Loko.

Scott: I just picked up Johnny from the hospital.

Dan: Loko Overmann night?

Scott: Exactly..

Loko Overmann Night by The one guy you don't know December 17, 2010

taking a night class 

an increasingly accepted social euphemism for having an evening set aside each week for strip club visits. Usually this refers to habitually going to one specific night club, but the term still applies for trips to multiple spots, provided the visits are made on the same evening each week.

Jill: I was worried that my boyfriend, Pat, was hanging with the wrong crowd and getting into the wrong things. Thank goodness he's taking a night class!

Pam: Uh, Jill...

Jill: I mean, his friends these days are just going nowhere, at least now he's doing something productive. Odd that they accept payments weekly for the course.

Pam: Jill...

Jill: And always only in single dollar bill denominations.

Pam: Jill...

taking a night class by Dartz02 March 26, 2011

Sounds like a Saturday night 

This phrase can be used as a replacement for "That's what he/she said", or "Sounds like my first time". Used to give a description of something out of the ordinary a sexual innuendo while at the same time making it appear as normal behavior for a Saturday night.

Linda: So yesterday at 11pm less than 12 hours before my kid's science project was due I had to run out to the store for a gallon of vegetable oil, 2 cucumbers, food coloring, a pound of butter, spray cheese, 6 kiwis, and a turkey baster. Came home, and after 4 hours of me doing most of the work, I was covered in a concoction of mystery sludge that would only wash off with a mixture of ammonia and floor soap. After all that, I'm still not finished.
Amy: Sounds like a Saturday night.

Sounds like a Saturday night by 00Snort00 October 18, 2012

Michael's game night

When a dorky guy is able to hook up with a girl out of his league due to her getting obscenely drunk and desperate. Usually involves her dancing awkwardly or other forms of self-embarrassment.

It took a few shots and Neil Diamond on the jukebox, but the lame birthday party turned into a Michael's Game Night for the lucky lad.

Michael's game night by fishball November 20, 2013

Super Fun Night 

THE BEST SHOW IN THE WORLD!!!!!!

But sadly, was cancelled on February 19, 2014

Created by, Rebel Wilson

For the past 13 years, three single ladies have set aside every Friday night as "Friday Fun Night". That is, until one of the women, Kimmie Boubier (played by Wilson), decides it is time to take this party to the next level after befriending a fellow attorney.

Rebel Wilson created Super Fun Night on October 2, 2013.

Super Fun Night by A AWSOME person May 26, 2014