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?"
by Realest Savage January 22, 2016
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.
by Yourmothermomrt3909tr October 13, 2020
Dude who cracks open a cold one with the boys on the weekends, because the weekends are for the boys.
by svariņš March 20, 2018
by Teamfortressisagoodgame April 15, 2021
gay kid that thinks he has a long penis which it isnt and works out all the time to make himself look like a tank(he isnt)...
by gangsta yo January 1, 2009
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.
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.
by poontang r us April 12, 2011
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."
Person 2:"Yep, his name is most definitely Rainer Ami."
by Ms.Gertrude January 5, 2022