nightsoil 

human manure, shit, crap

Ending a century-old tradition, nightsoil collectors have cleared the last lavatory in Beijing by hand, another milestone in what has been dubbed the toilet revolution sweeping China

nightsoil by noguide June 15, 2006

Nightstyle 

A song that consists of both nightcore and hardstyle/jumpstyle genres.

It is fairly unknown genre and is considered as a hardstyle/jumpstyle genre that has been 'nightcored'

*Listening to purple ramon*
'Isn't that nightcore?'
'Nahh mate it's nightstyle'

Nightstyle by lovedabacon August 23, 2012

polishing the nightstick 

Masturbating a large, black cock.

Daunte and Dwight slumped in their seats at the back of the porno theatre, enjoying the movie while polishing the nightsticks. Their oversized dicks attracted the attention of several theatre regulars.

polishing the nightstick by MTSpacey December 27, 2007

Nightskin 

Formerly a term of offense used against blacks, now used in reference to a powerful race of dark skinned individuals. It was first brought to light by tiktok user @tonyweaverjr, who piloted a reclamation of the word and incited the start of an entire community of writers, artists, musicians, and others who create empowering content for the fictional universe.

I am the Ebony Warrior, leader of the Dark Brotherhood. I call upon my nightskin brothers and sisters. Our time is now.

Nightskin by JN3XUS May 2, 2022

Nightswimming 

The act of skinny dipping with close friends. As we've learnt from REM , it deserves a quiet night.

"Dude, I totally forgot my shirt by the waters edge when we went nightswimming the other week.

Nightswimming by Facepalm199 October 3, 2011

Nightstick 

The act of dipping one's penis in Nyquil(or a similar product), and subsequently receiving oral stimulation, resulting in a state of slumber for the one who performed fellatio

"Stacy was struggling with her insomnia last night, so I gave her a nightstick to help her sleep. It ended well for both of us."

Nightstick by ThespianBelfry June 25, 2017

nightowl 

Someone who stays up late and sleeps in the day.

"Tash and Ben will be awake, they're both nightowl's.

nightowl by Diego July 7, 2003