nyan
A sound effect used for imitating a cat's cry. The Japanese equivalent of "meow".
This tag includes variations such as "nya", "nyaa", etc. In Japanese, it can be written as: ใซใใ, ใซใ, ใซใใผ, ใซใใ, ใใฃใณ, ใใฃ, ใใฃใผ, ใใฃใข, and probably a few other variations.
Often accompanied by a paw pose or other cat-like mannerisms.