There are times in Overwatch when putting down a spray feels almost necessary. Such as when you get a really good play that you think might be dubbed Play of the Game, and put a spray on the ground directly after it as a tasteful alternative to, uh, y'know. Or maybe you just wanna take a posed screencap while doing an emote in front of a particular spray.
Sprays are silly in nature, kinda useless, but highly desirable in the realm of Overwatch. And when fans pleaded with Blizzard on Reddit to get a pillow spray for Ana, the support sniper who can put enemies to sleep, they listened.
In the latest update for Overwatch, the same update that brought over the new Horizon Lunar Colony capture-point map, some nerfs, and a couple "new" skins, it also ushered in a new simplistic spray. The spray is just of a white pillow, as asked for by fans, meant to be sprayed beneath the heads of foes when they are put to sleep.
It's a goofy spray, but is one that further shows the close ear Blizzard keeps out for the fandom surrounding the multiplayer online team-based shooter. It's arguably what led to D.Va's best emote. The one that has her crouched on the ground eating Totally-Not-Doritos, gulping Totally-Not-Mountain Dew, while playing video games. D.Va has affectionately been adopted as a "gremlin"-like being in the fan community (similar to the anime and manga character, Umaru), and this bonus emote cemented that theorized lifestyle.