RATIRL is a League of Legends streamer best known for mastering Twitch, the plague rat champion, with an attack damage build focused on stealth and rapid auto attacks. His viewers nicknamed the fast, low damage hits mosquito bites, turning a normal in game attack sequence into a running joke on his channel. Clips of the autos spread through Twitch highlights, YouTube edits and Discord soundboards, where the sound now signals a sneaky rat play about to delete someone despite sounding harmless at first listen.