A very simple explanation to the song (using a lyric site who's owner said he met tyler and got the meaning) is "the pantaloon" is means death. So basically the person in the songs father and grandfather died and now it's HIS turn. And personally what I think when he says "now your friends fertilize the ground you walk" basically means all of your friends are dying and now its his turn. You can easily see why he's losing his mind, when everyone around him is dying and he realizes that he is next.
A very simple explanation to the song (using a lyric site who's owner said he met tyler and got the meaning) is "the pantaloon" is means death. So basically the person in the songs father and grandfather died and now it's HIS turn. And personally what I think when he says "now your friends fertilize the ground you walk" basically means all of your friends are dying and now its his turn. You can easily see why he's losing his mind, when everyone around him is dying and he realizes that he is next.