Okay... so before I get into this, you can't get mad at me. I didn't make this word up. I didn't make the Japanese language and I have nothing to do with this. And don't blame Japanese people for it either.
So apparently a stupidChinese person is a molester. Our theory is, that in China "Chinese" just meant "person" so a molester was just a stupid person. But in Japanese we think of 漢 as Chinese, so there you go. Either way, you'll probably never ever forget this one. You're welcome!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.