First tab.  This song is from the "F*ck You EP."  The whole song is this one riff, with
a few parts that pause or drop the bass line.
Fun line to play, I had difficulties tabbing the second part due to the transition from
the 3 on the A string and the 5 on the G string.  I slowed it down using the Capo app
for my iPod and from what I could tell you just play two 5's on the D string very 
quickly and lightly to sound like a quick guitar strum.
Listen closely to the song and you should be able to get the timings down.

G|------4-3-2---2-2-2---------5------------------|
D|--2-2-------------------5-5---5-------0-1------| Repeat
A|----------------------3---------2-2------------|
E|-----------------------------------------------|