RWBY is an anime-inspired web series created by Monty Oum for Rooster Teeth, debuting in 2013 and running for multiple volumes with a devoted online fandom. Clips of its most theatrical dialogue have long circulated as reaction memes, and this disgusted 'filth' outburst became a favourite shorthand for calling something rotten. Meme editors pair it with cursed images, bad takes and low-effort content because the doubled punch word lands instantly. Years after the line first aired, it still works as a quick, funny verdict in edits and group chats.