It sounds like the tab should be played like this:

THIS IS INCORRECT!!   G|----------------11-00---------------|
                      D|----------------------33-11---------|
                      A|-133--133-1--33---------------------|
                      E|------------------------------------|

But there are effects on the bass line with an echo and the bass is simply just this:

G|------------------------------------|
D|---------------6-5-3----------------|
A|-333-333-333---------6--------------|
E|------------------------------------|

And then:

G|------------------------------------|
D|-333-333-333---6-5-3----------------|
A|---------------------6--------------|
E|------------------------------------|

Then you just repeat the verse again until the chorus! I know this is right having 
Gorillaz perform this live on MTV and Jools Holland!

Extremely fun and easy song, and generally easier than the incorrect tabs that have 
notes!! Enjoy!