The original tab is made by tara and can be found here:
http://viewmorepics.myspace.com/index.cfm?
fuseaction=viewImage&friendID=361498543&albumID=1064192&imageID=13469177
[ Tab from: http://www.guitaretab.com/w/warpaint/220389.html ]
e----13-----11-------------------------------------------------|
B-13-----13----13----------------------------------------------|
G-----------------12--12-13--13-10---8-------------------------|
D--------------------------------------------------------------|
A--------------------------------------------------------------|
E--------------------------------------------------------------|
When the song picks up I think you just strum the two notes that you pick in the intro
Just listen for it.