The opposite of "ya rly," yet another possible response to "o rly?."

meaning not really, used by people too slow to type whole words, also abbreviated to "nt rly".
alternate response to the question "ya rly" which is all too common internet slang.

shorter version of `really`.

The final in the:
O Rly, Ya Rly, No Wai sequence.

(adjective) really, extremely, very

A way mentally slow people spell the word "really." It appears only people with an IQ lower than the average human's temperature uses this "abbreviation." Yeah, and I'm the King of Egypt.

1/2 Chatspeak,1/2 sarcasm.
This phrase is often used when someone makes a dumb comment of disbelief to a statement.