If someone has ever told you “Shekh ma shieraki anni”, then that means they quite fancy you (“my sun and my stars”) - in Dothraki. Or, if someone has told you “Valar morghulis”, that means they’ve probably got bad intentions for you (“all men must die”) - in High Valyrian.
Now, unless you’re a big fantasy fan, it’s likely you’ve never heard of either of these languages, never mind these phrases, because they’re both examples of Conlang, or constructed languages. In this case, both of these languages were invented for George R.R. Martin’s fantasy epic Game of Thrones. Sadly, no one speaks Dothraki or High Valyrian in the real world. We know, we’re sad about that too.
But some superfans of other examples of conlang strive to keep them alive. Maybe you know a few words of Klingon (Star Trek), or the Elvish languages (Lord of the Rings), or a little bit of Na’Vi language (Avatar). Now, let’s sign off with some lovely Klingon words - “pe’vIl mu’qaDmey”, which means “Curse Well!” We’ve been assured this is ultimately Klingon for “have a nice day” but maybe don’t go yelling it at your loved ones, just in case.