The act of rushing to score before all players are in game. To cap a flag in capture the flag before all players are able to move due to connection times.
This can be done in online gaming instead of waiting for all participants to enter the game. Usually done by insecure players who feel a need to score before all opponents are there as this is the only way they might score. eg: That asshole just Gundo'd the flag ! WTF , Who gundo'd the flag?