So this is how mac plays it acoustically and it matches up with the record real nice. 
For the G chord use this pattern while strumming: 

e|---3----3---
B|---0----0---
G|---0----0---
D|---0----0---
A|---3----2---
E|---0----0---

3---3---------
0---0---------
0---0---------
0---0---------
0---2---------
0---3---------

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--------------

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-----------| x3
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And for the  chord use the  shape slid up two frets.

             
As I’m getting

 
 older, chip u

p on my should

er
              
Rolling throug

            
h life, to rol

            
l over and die

[Scat Singing] 
(-)


Missing Hippie

 Jon, salad da

ys are gone
              
Remembering th

            
ings just to t

            
ell ‘em so lon

g

[Scat Singing] 
(-)

         
Oh mama, actin

              
’ like my life

   
’s already ove

r
         
Oh dear, act y

              
our age and tr

   
y another year

Always feeling

 tired, smilin

g when require

d
              
Write another 

            
year off and k

          
indly resign

[Scat Singing] 
(-)


Salad days are

 gone, missing

 Hippie Jon
              
Remember the d

            
ays just to te

            
ll ‘em so long

[Scat Singing] 
(-)

         
Oh mama, actin

              
’ like my life

   
’s already ove

r
         
Oh dear, act y

              
our age and tr

   
y another year
         
Oh mama, actin

              
’ like my life

   
’s already ove

r
         
Oh dear, act y

              
our age and tr

   
y another year