intro:

G -----------|
D -----------|
A -----2222--| 5 times then a pause and 2 more
E -----------|

this bass will be in the song the whole time

the funky melody

part 1:
G -----------------------------------------------------|
D -----------------------------------------------------|
A -----555--7777--9999---------------------------------|
E -----------------------------------------------------|

part 2:

G -----------------------------------------------------|
D -----------------------(eleven)----------------------|
A -----555--7777--9999--11-11--7777--9999--------------| you'll need some kind
E -----------------------------------------------------|of effect on your bass

that's about it, there are a lot more basssounds in the song but well these are the main parts!