Meaning:

    “喷” means to “spit” or “shoot,” and “子” is a noun identifying suffix. Literally, this term means someone (something) that spits (shoots). In Chinese mafia slang, this term refers to firearms. However, a more common usage is seen among Chinese netizens, referring to people who criticize with no justifiable reasons. These people negate everything and everyone to feel good themselves.

    Example:

    A: 你周末又玩游戏了？

    Nǐ zhōumò yòu wán yóuxì le?

    So you played online games again this weekend?

    B: 就玩了一会儿。

    Jìu wán le yīhuìr。

    Just for a short while.

    A: 我才不信呢。

    Wǒ cái bù xìn ne。

    I don’t believe you.

    B: 因为遇到一个喷子，一直在找我的茬。每每遇到这样的玩家，最让人郁闷的不是输掉这局游戏，而是影响了之后的心情。

    Yīnwèi yùdào yīgè pēnzi, yīzhí zài zhǎo wǒ de chá。Měiměi yùdào zhèyàng de wánjiā, zuì ràngrén yùmèn de bùshì shūdiào zhè jú yóuxì, érshì yǐngxiǎng le zhīhòu de xīnqíng。

    I met a fierce criticizer, who kept finding fault with me. Every time you meet such a guy, the biggest bummer is not losing the game, but ruining the rest of your day.