Nije moguće, meaning it is not possible in Serbian, comes from Ivkova Slava, a Serbian film centred on the traditional family celebration of the same name. The line works as a compact expression of disbelief, which helped it travel beyond the film into Serbian-language memes, reaction videos and short edits. Because the phrase is short, instantly recognisable and easy to place after a surprising moment, creators keep returning to it whenever they need a quick, sceptical response without adding dialogue of their own.