The laugh belongs to Samantha Maxis, the young antagonist and announcer from Treyarch's Call of Duty: Zombies mode. In the games she taunts players with a sweet voice that turns cruel, and her giggle became one of the mode's most recognizable audio cues. Clips of her laugh were ripped to YouTube and soundboard sites, where horror creators and Zombies fans reused it outside the game. It stuck around because it instantly signals playful evil, making it useful for memes, edits and streams that need a creepy childlike laugh.