Crab

(N/adj/v) - a person who plays a game/video game that knows they are going to lose, so they plan to take down as many people as they can before losing/quitting

Commonly used in Battle Royale games

Also see Crab Mentality

Noun “We cleared the entire city and a lone crab who was hiding in the bushed killed one of our teammates before all three of us went and demolished him”

Verb “Crab that guy quickly! His entire team is coming to get you!”