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It's an acronym for Rainbows, Butterflies and Unicorns. It can be used sarcastically or seriously. Sarcastic use includes when a situation or expectations are unrealistic and one has to put on a happy face regardless.

It can also be use ecstatically to describe an especially happy state of being within one's self about something wonderful.
Sarcastic use:

Sue: The boss gave me this 1500 page report to review and edit by the end of the day. That's in 15 minutes. That dipshit thinks it's all RBUs.

Jenny: At least you gave good face.

Ecstatic use:
Sam: How is it going with that fireman you are seeing?

Michael: It's all RBUs. I want to have his babies. LOL.
RBUs by somefun April 26, 2011
Related Words

RBux restock

RBux is a free robux rewards website, it's kinda good but the restocks take forever. This time the restock is a myth, RBux will never restock. They keep telling us they will restock but every day passes and nothing happens...
Friend: Yeah, you can count on me, I will be coming tomorrow
Tomorrow:
Me: Oh c'mon, you didn't have to lie like that, this isn't the RBux restock...
RBux restock by PapaCat August 27, 2021
Riding bike under influence usually a bad decision made while drunk
THEY DRINK TOO MUCH SO ITS BETTER TO RBUI
RBUI by PEPE AND POPO December 29, 2021

rbutchered 

To have your account completely pwned and be publicly humilated in front of your peers.
Oh man, we got his password and totally rbutchered his ass!
rbutchered by rbutcher February 18, 2009
Rbuh is a mistake that u can write by total accident. The meaning of "rbuh" is just another way of saying "bruh".
"Rbuh, y did u fuck ur step cousin"
rbuh by Victor Bear April 7, 2024
More from Urban Dictionary

You met me at a very Chinese time in my life

A moment in time where you feel distinctly Chinese over all other things.
Dante: "I wish I could be Nigerian, but I can't because I'm Chinese. You met me at a very Chinese time in my life."
Word of the Day on September 25, 2026
Adjective. Used to describe persons who have adjusted or altered their lifestyle for environmental reasons. Crunchy persons tend to be politically strongly left-leaning and may be additionally but not exclusively categorized as vegetarians, vegans, eco-tarians, conservationists, environmentalists, neo-hippies, tree huggers, nature enthusiasts, etc.

Also used to describe establishments where alternative foods and products are sold, i.e. natural food stores.

Modified derivative of granola.
"I need more crunchy guys in my life. I'm so tired of dating preppy metrosexual assholes."

"I'm heading out to the crunchy store to pick up some fair trade chocolate and tea tree oil, do you need anything?"
crunchy by EBC July 11, 2007
Word of the Day on September 24, 2026
A group of people, typically women, searching through someone’s digital footprint in order to find more information about that person.
Susie wasn’t sure if her new Hinge match was a creep, so she assembled Galantir and they found out he used to post slurs on gaming forums.
Galantir by Ge-sus September 22, 2026
Word of the Day on September 23, 2026

murderhobo 

In a tabletop game, a murderhobo is a player who murders NPCs indiscriminately. This is normally derogatory, referring to a player who totally ignores quests, dialog, backstory, trade, world building etc.

The term is most common with Dungeons and Dragons, but it can be applied to most RPGs where the player is allowed to kill most quest-giving NPCs and NPC traders. E.g. Elder Scrolls, Fallout, Divinity original sin.
DM: The sad little orphan girl tugs at Steve's trenchcoat to get his attention, and ask for help saving her pet dog from...
Steve: I'd like to roll a strength check against strangling the orphan.
Dave: I call dibs on the dog.
DM: You murderhobos disgust me.
murderhobo by Loup&S September 9, 2021
Word of the Day on September 22, 2026
In sales terms, a whale is a prospect that is significantly larger than an organization’s average customer.

Whales are large and extremely difficult to close. Due to their immense size, they are highly sought-after.

A whale is typically identified at first by a whale hunter on the sales team, but often requires cross-discipline participation in order to close; this includes assistance from operations, engineering, creative, client success, and business development teams.
"Shit...the sales director chewed me out on the sales call this morning. He's totally pissed that I have nothing in my pipeline. I've been focused on this one whale for so long that I haven't had time to prospect for normal-sized deals."
Whale by FQ_GFY February 3, 2020
Word of the Day on September 21, 2026

Concrete cowboy 

A guy who thinks he's a country kinda guy, but in reality lives a comfortable city / suburban life.
Eugene: Look at that dude in the cowboy hat!
Todd: He's just a concrete cowboy.
Word of the Day on September 20, 2026
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