System of a Down
Toxicity
X
Tuning-Drop C 
Tabbed by Mark Chatel
This is my first tab and I'm almost positive it is 100% correct
I'm not sure about how many 0's there is during the pre-verse just listen 2 find out.
Intro-Palm Muted       
|---------------------   }
|---------------------   |
|---------------------   |
|-10p0-12p0-13p0-12p0-   |
|---------------------   |
|---------------------   |
                         |---- I don't know how much times those repeat you'll 
|-------------           |     have to listen to figure it out.
|------------            |
|-------------           |
|-10-12-13-12-           |
|-------------           |
|-------------           }

Pre-Verse
Listen for the right amounts of 0's
|-------------------------------------------------------
|-------------------------------------------------------
|--------------9b-9b--9b--9-----------------------------
|-------------10b-10b-10b-10----------------------------  x4
|0--0-0-0-0-0--------------0--0-0-0-0-0-0--10s13-13-13--
|0--0-0-0-0-0--------------0--0-0-0-0-0-0--10s13-13-13--

Verse (palm muted)
|-------------
|-------------
|-------------
|-------------  x8
|-10-12-13-12-
|-10-12-13-12-

Chorus
0's Palm Muted
|--------------10b-----10b---10b-----
|------------------------------------
|------------------------------------  x2
|------------------------------------
|0---0-0-0-0-0-----0-0-----0-----0000
|0---0-0-0-0-0-----0-0-----0-----0000
Just listen to the song for the order, it's pretty easy