nǐ / zài / zhèng / shì / huì / yì / shàng / jiǎng / zhè / ge / xiào / huà / kǒng / pà / bú / tài / dā / diào

你在正式会议上讲这个笑话，恐怕不太搭调。

Telling this joke at a formal meeting probably would not be appropriate.