RBYP 

read before you post.
used in forums when someone asks a question/replies to an issue that was already addressed.

jane: oh my god! danica is going to prom with josh!
john: duh we already knew that.
james: yeah RBYP!

RBYP by perksofbeingawallflower July 6, 2007

rbyp 

means read before you post, usually used in forums when someone brings up a subject that has already mentioned; can also be ryip

Someone already said that in the other forum!! Learn to rbyp!! >:(

or

Sorry, I didn't rbip.

rbyp by shagg June 27, 2007