chin-chin

A Japanese term with several different meanings. It can be onomatopoeia for the sound of a bird chirping (ちんちん chin-chin), a Japanese equivalent of the "beg" command for a dog (チンチン chin-chin), and it can also be used as a euphemism or slang for male genitalia (ちんちん chin-chin or TNTN - short for "Tintin" - in Japanese-style romanization).

This phrase is commonly associated with Mystia Lorelei from the Touhou series, because she is a bird youkai. For tagging purposes, this tag is only to be used when Mystia herself is saying the phrase, or when it's used to refer to her (as in Danbooru post #510353).