R 

The movie rating in which edgy 12-year-olds make a desperate attempt to get into or watch, even though they don't get half of the jokes in the movie.

brother: "You know, mom and dad said you aren't suppose to be watching rated R movies."
12-year-old: "Fuck mom and dad, I can watch whatever I want."

R by Dubiks November 13, 2018

R 

The spoken sound to acknowledge failure or a Let Down decision. It is emitted from one's mouth either voluntarily or involuntarily upon receipt of bad news.

Henry: Are you coming on holiday with us?
Steve: I want to, but unfortunately I have no money.
Henry: R.

R by pppmmunuay March 26, 2009

/r/ 

Abbreviation of 'Requesting'

/r/ Dragonforce mp3s

/r/ by sanitysama August 14, 2006

R* 

an abbriviation for the Game Company Rockstar Games who brought into this world wonderful games such as GTA:III and GTA:Vice City

when is R* gonna release the new GTA game?

R* by brian January 20, 2004

:R: 

The common pirate phrase "Arrr."

:R: a lazy pirate I be!

:R: by Swilo September 29, 2003

r 

The non existant letter in any bostonian's vocabulary.

"Pahk the cah in Hahvahd yahd" (Park the car in Harvard yard)

r by anonymous December 30, 2003

R 

The letter R is the letter R in the alphabet. If you don't know R, you are the dumbest person in the world. Sorry folks.

Dude 1: "OMG I SEE R, WHAT IS THAT?"
Dude 2: "OMG ITS A FREAKING LETTER IN THE ALPHABET DUMBASS"
Dude 1: "Dud, you don't have to act like that"

R by hashTagTurtle July 3, 2018