A heavy discussion on forums that usually ends in total chaos. Insulting words are used frequently. Often a flamewar is started by a troll, either in the thread title, or in an offtopic post that is added to the thread. Administrators will often close a thread if it has turned into a flamewar.
A n00b had started an innocent thread about graphical differences between Half-Life 2 and Doom3, but when Brassmonkey came in, the discussion turned into a flamewar, until Abom|nation had to close it down.
A thread in a forum where posts get too out-of-hand and result in chaos and spamming/flamming. Usually, flamming occurs between two members and flame wars occur between large groups of members attacking others. Administrators of the message boards will have to close the thread if this happens.
"It started out as a discussion poll but quickly turned into a fu**ing flamewar."