Form a D chord and use your middle finger for the bending and TAB.
Main Riff
|----------------|
|--------3------3|
|--------2------2|
|------0---3b-0--|
|--0-3-----------|
|----------------|
[ Tab from: https://www.guitartabs.cc/tabs/b/bill_justis/raunchy_tab_ver_2.html ]
|-------------------|
|--------3---------3|
|--------2---------2|
|------0---3b-3b-0--|
|--0-3--------------|
|-------------------|
Repeat 2 times
Hit the bass note for each of these chords then strum the chord
G x4
D x4
A x4
D x4
Then go back and repeat the whole song 5 times and for the ending, just do the main riff
and fade out.
