four-flusher（美国俚语）唬人者，假装者，骗子

【例句】
You shouldn’t let these four-flushers come it over you.
你不应该上这些骗子的当。

Don't be fooled by his talk. That low-down four-flusher is not really a movie producer.
别被他的话骗了。那个无耻的骗子不是真的电影制片。