look up any word, like dirty sanchez:

1 definition by Ballin All Day

 
1.
RBS
Random Boner Syndrome. When a male's sexual organ is continuously erect at random times.
Doctor: "Holy Crap! What is that?"

Male: "Sorry, I have RBS."

Doctor: "Whew! It's all good, so do I!"
by Ballin All Day January 17, 2012