RB 

roast beef short for roast beef dangles. nasty dangly female genitalia.

Broski I got that chick back to my place but she had nasty RB, I couldn't beat.

RB by corbet December 28, 2007

RB 

has big pp

Robert: LMAO YOUR AN RBBBB

RB by bigelii September 28, 2020

rb 

A rb (rolex boy) is a term used for boys who use false Rolex watches.

That guy overthere is a rb. Defined as rolex boy

rb by Llazi-G July 4, 2018

RB 

An extremely horny male teenager who will do anything for some ta-tas

My friend is such a RB

RB by B M October 21, 2004

rb 

1. rich bitch
2. random boner

Christina is a major rich bitch and gave Tony a random boner!

rb by . February 21, 2004

rb 

Reason Boner: An erection developed from arousal; the antithesis of NRB (no reason boner).

"Dude, that chick gave me a huge RB!"

rb by Nicholas Run August 9, 2007

rb 

reverse boner

Person 1: Dude ew look at that fat chick...

Person 2: Awww dude I just got an rb

rb by dfray69 July 23, 2010