Rainer 

Adjective - Someone or something that is absurd, crazy, over the top, or ridiculous. Often times, the noun being described just makes you want to shake your head and laugh.

This was the most rainer school that we have ever been to!

Rainer by Prepositions October 1, 2015

Rainer 

Rainer is a word used for the longest pee pee, and the biggest bum. A synonym of Rainer, would be "Slimthick", "Nikki", "Phat", or even "Cop-a-feel?"

"Ayyy, he got that Rainer type of thing?"
"Did you know Jen Selter has a nice Rainer?"

Rainer by Realest Savage May 3, 2016

Rainer 

a person who is not wise and will fuck you up if you call them 'Rainer'. most of them are probably named "R4In999". not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise. not wise.

"Hey Rainer!" says phoenix
"FUCK YOU CUNT" says Rainer

Rainer by Yourmothermomrt3909tr October 13, 2020

RAINER 

A Rainer will go out with a Nayeli & then they’ll end up single after a long complicated relationship, however, the love was real.

Damm Bro, You Remind Me Of Rainer!

RAINER by BillyLovesRose August 1, 2018

Rainer 

A person who searches their name on urban dictionary

imma search my name *Rainer* on urban ditcionary bc im bored

Rainer by Rainerssss March 22, 2023

Rainer. 

From the term 'rain on my parade', used to describe someone, who, when you are feeling at the top of the world and generally high on life, has to ruin it all by an highly unnecessary little comment.

Person 1: you'll never guess what...
Person 2: what?
Person 1: I just won a million pounds on the lottery!!!!!!!!!!!!!!!!!
Person 3: You'll still have to pay tax on it though.
Person 2: just rain on his parade, why don't you?
person 1: Rainer.

Rainer. by poontang r us May 1, 2011

Rainer Ami 

A person who probably needs to rethink how they started getting into the internet. This person has probably gone through many breakups and knows they all weren't real relationships. They're probably also really horny, and absurd.

Person 1:"Look at that guy over there, he's pretending to be a ninetails."
Person 2:"Yep, his name is most definitely Rainer Ami."

Rainer Ami by Ms.Gertrude January 5, 2022