The phrase comes from gaming slang, where EZ is shorthand for easy and players use it to taunt opponents or celebrate a win that required little effort. Short spoken reactions like this one spread through gameplay clips, streams and short-form videos, where a two-second line can carry the whole joke without slowing the edit. It has stayed popular because it fits so many moments, from ranked matches and speedruns to casual play with friends, and because its questioning tone makes the boast sound funnier than a straight brag.