Griefing

Griefing is the act of intentionally harassing other players in multiplayer video games. For example, a Minecraft player who continually blows up your creations, despite you asking them not to, is a griefer.

Those who grief derive pleasure not from winning a game or playing it as intended, but by trolling other players until they ragequit. Often, griefers achieve this goal by abusing seemingly-harmless game elements or mechanics. For instance, a League of Legends (LoL) player who is griefing their teammates (yes, this happens) may repeatedly ping locations on the game map, to spam their teammates with annoying sounds.