Just Plain Retarded.

So, following a lunchtime of chinchin related laughter, it soon became an insult.

And note: a chinchin is a part of the body but you don't wanna scratch it. really. hint: its japanese.

"You chinchin!" or basically, any insult with a foreign word in it.

response:

"Don't use that kind of language with me!"

hahaha. Literally.