Deleted, without discussion. This is a wiki term used for the action taken to relieve the wiki of text that is clearly outside the boundaries of civil discourse or outside the bounds that the community has agreed to set.
Lines, or even whole articles, will be zapped when they are natter, except in those few areas of the wiki (such as Headscratchers) where natter is tolerated, even enjoyed. Ad hominem attacks, statements directed against a person rather than against an argument, will also likely be zapped. This may also result in banning, for such an attacker.