(C)I love to have a beer with Duncan 
I love to have a beer with (G7)Dunk 
We drink in moderation 
And we never ever ever get(F) rolling (G7)drunk 
We (C)drink at The Town & Country 
Where the atmosphere is (F)great 
I love to have a beer with(Dm)Duncan 
Coz (G7)Duncan's me (C)mate 
 
* I'm not really sure about the additional lyrics;  
I've sang this song so many times and generally ask 
members of the audience for their name and then try  
and make something up on the fly: it works most of the time.  
 
Originally, I think there was Kevin... 
 
I love to have a beer with Kevin 
I love to have a beer with Kev 
We drink in moderation  
And he drives me home in his big ol' Chev 
 
There was Patrick 
 
I love to have a beer with Patrick 
I love to have a beer with Pat 
We drink in moderation  
And it really wouldn't matter if the beer was flat 
 
And Robert 
 
I love to have a beer with Robert 
I love to have a beer with Bob 
We drink in moderation  
Just one more and back on the job 
 
That's all I can remember... 
 
The key change section starts with a simple flat picked bass  
run on the C chord: C - B - A - G -  
and then to the A chord as Slim yells "Change Key!"  
and then to the D chord where the original progression continues.