facetious
adj. 诙谐的；爱开玩笑的；滑稽的；(尤指在不合适的时候)开玩笑的
例句
Stop being facetious; this is serious.
别乱开玩笑，这是个严肃的事。
《牛津词典》
The woman eyed him coldly. "Don't be facetious," she said.
那妇人冷冷地看了他一眼。“别那么轻浮，”她说道。
《柯林斯英汉双解大词典》
Yet there is also an art history of rubbish (and don't forget, facetious remarks are welcome on this blog).
不过废品艺术却早有一段历史(别忘了，在此博客上欢迎戏谑的评论)。
