Which is kind of tone of voice, inappropriate jokes, something that might come out through very informal channels of communication like WhatsApp, that can then sort of leave fairly or otherwise a sort of lingering bad taste.

这是一种语气， 不恰当的笑话，可能通过非常非正式的沟通渠道（如 WhatsApp）出现的东西，然后可能会公平地或以其他方式留下一种挥之不去的不良品味。