おかしな人。あぶない人。
There are four wack jobs in the American political situation.
＊ご注意
The word meaning very bad or of dubious quality is wack, with no h. Your spell check might disapprove of wack, but the word has been in English at least a quarter of a century, and it has another sense—an eccentric or crazy person—that is even older, so spell check is wrong. In the newer sense, the word arose out of U.S. hip-hop culture, probably around 1980. More specific origins have not been definitively established. It could descend from the older adjective wacky, which means peculiar or odd.
From https://grammarist.com/spelling/wack-whack/
https://youtu.be/qGGhOu88R1I
