This is the actual bass part for play That Funky Music White Boy. There are some parts of this song where the bass isnt playing, and well i hope you can tell where those parts are.  Don't mistake this part for the guitar part in the intro, they're similar but they have different rhythms.

This is basically all you play the entire song 
G----------------------------
D----0-2-----0h2--0-2----0h2-
A--------0h2---------0h2-----
E--0------------0------------

Then at the 1:00 minute mark he plays this.
G---------------------------------
D----------5-5---3h5---5-5---3h5--
A-------------3h5---------3h5-----
E--0-1-2-3-----------3------------

Play that a few times then this.  I think.
G-------------3-3-5-7---7--------------------
D----5-5--------------7---7-5---5------------
A-------5-3-3-----------------7---7-5--------
E--3----------------------------------7-5-3-0

The E at the end of that last phrase leads back into the main rhythm in the beginning.  Eventually you play the second and third verse again but you should be able to find that yourself.