Internet term meaning "yeah really", usually found after the term orly.
person A - I'm super awsome =o
person B - orly?
person A - yarly
Amazing, pwn to the 3456th degree, epic to the yes degree, the best you can get.
A: Did you see that rhinoceros on a giraffe on a unicycle?
B: Thats so yarly!
Mixing the words "yeah" and "gnarly"
1)Dude that shirt is so yarly!