This is a cool song and the bass is pretty easy, but pretyy dang funky.  OK.  
The distance between the notes have nothing to do with the rhythm.  I figure
you'll be able to listen to the song and figure out when to play the notes I
wrote down.  The lines don't indicate measures either.  Just so you don't think
I'm an idiot.
~ means hammer on
^ means pull off
Listen to the song to figure out when each of these parts is played and when.  
The main riff is as follows.  This is part A.
D---------------7----7-7-|----------------7--5--4~5^4-0-|
A---------3-5-7----7-----|--------3-5-7-----------------|
E----5-------------------|---5--------------------------|
They play this 4 times before going into the "Where it's at" part which is just
an E played at different times.  you should be able to figure it out if you're
not stupid.  That is part B.  The third part is kinda like a bridge.  This is
part C.  It's played twice at a time.
D--------5------------3----|------2--2-------0---2-|
A-------------3---5--------|-------------2---------|
E---3----------------------|--0--------------------|
Those are the three basic parts of the song that have bass.  Enjoy!

--Brian Munz