nightbot 

Nightbot is a bot used on YouTube that always likes to interrupt your chatting and is crap.
You can always find ways to see it being crap.

“Why does this nightbot interrupt us?”
“You just said why it’s defined! It’s crap!”

-Zadensucksatdictionaries July 15, 2021

nightbot by Zadensucksatdictionaries July 15, 2021

Nightbat 

A chill dude on twitter who plays roblox and makes everyone laugh. (@nightbat152)

Me: Hey, have you followed @nightbat152 on twitter yet?
Guy: No
Me: you son of a bird, follow him right now >:(

Nightbat by YourToeSmells December 26, 2021

Nightbutt 

A term used to describe Nightbot on streaming platforms like Twitch. When this chat bot behaves in a way that is unintended or becomes irritating at times during live streams, the bot's name quickly becomes Nightbutt. Aside from being a butt once in a while, it's a solid tool for live streamers by providing a wide range of features for moderation, automation, and entertainment.

Oh, come on, Nightbutt, you're acting up again. Nightbutt, why are you being mean to Bob? Bob's just trying to use some emotes in the chat.

Nightbutt by BlameNick September 11, 2018

nightbooker 

Noun ~ a person who waits until around 11 pm to go on facebook and check on the news feed from the whole day and catch up on anything that they missed out on. These kinds of people are the one's who like and comment on everything hours later.

I woke up this morning and saw i had 20 notifications on facebook. I swear that kid is such a nightbooker now that he works until night.

nightbooker by gleedrunk2378 April 22, 2011

nightboi 

Affectionate nickname for a raccoon, most often used in Toronto (see also: trash panda)

“A raccoon broke into my house and ate an entire loaf of bread”
“Those damn nightbois”

nightboi by Gabdar November 13, 2018

NightBoi 

An absolute chad of a Batman knockoff hiding in the shadows fighting crime

Have you seen the new Toons Vs. NightBoi Episode

NightBoi by JustSomeSuperGuy June 24, 2022

Nightbitch 

A rude person who obsesses over bands such as Nightwish, who write overly-poetic and overly-dramatic lyrics that depressed kids confuse with being beautiful and deep. They more often than not have some kind of deluded crush (or borderline obsession) on keyboardist/lyricist Tuomas Holopainen and suffer from Münchausen by Internet.

Or anyone you dislike who likes Nightwish

You should have known Melissa's a Nightbitch.

Nightbitch by i'm sick of a fat nightbitch July 1, 2010