Waluigi was introduced by Nintendo in Mario Tennis in 2000 as Wario's partner and Luigi's rival, and his cheating, showboating personality quickly made him a meme favourite. Short voice clips of the character spread through gaming videos, streams and soundboards because they sum up an accusation in less than a second. This cheater line is now used far beyond Mario games, appearing whenever players joke about screen watching, loaded dice, edited scores or any win that feels a little too convenient to be honest.