LHDRIOJGFLK no problem anon !! just basically anything you dont wanna see! like if you have a certain ship you dont like seeing a landmine ship (basically a modern day notp if you remember when people used to use that term lol). landmines can be a lot of other stuff like if you dont like angst or something but at least in the western yume community i mainly see it used in the context of ships you dont like