I put a capo at 2nd fret, but I think JJW plays it open. 
 
       C5                        G5 
Yea, I used to look forward to Saturdays 
      C5                   G5 
When me and my grandpa'd get way 
      F5                  G5                   C5 
We'd hop in his pickup truck and we'd go to town 
                                F5 
We had a couple chores that we had to do 
    C5                       G5 
It didn't take long before we were through 
  F5                        G5                 C5                   
Then we'd let the pickup truck just wander around 
             F5                 G5 
We'd make a run to the county dump 
             C5 (walk down to) A5    
We'd always wave we saw someone        
 

  F5             D5                 G5 
Grandpa make up a song as we rolled along 
        F5                   G5 
To the post office without fail 
             C5       (walk down to)     A5   
We get some feed and we'd check out the mail 
        F5                         G5                    C5 
And we never took the same road twice on the way back home. 
 
I spent a few years out runnin' free 
I spent two or three in New York City 
And I moved back to Texas tired, hell I'd had enough 
I'd go to Luckenbach on Saturdays 
Cause Hondo had a way to brighten up my day 
He always made me laugh when we rode in his pickup truck 
We'd make a run to the county dump 
We'd always wave when we saw someone 
Hondo'd make up a tale as we rolled along 
To the post office without fail 
He'd get some chew and we'd check out the mail 
And we never took the same road twice on the way back home 
 
Well I miss grandpa and Hondo too 
I really miss the things that used to do 
So last week I went out and bought me an old pickup truck 
Now me and the kids spend Saturdays 
We do fun things in a simple way 
We love to start the day with a ride in the pickup truck 
We make a run to the county dump 
We always wave if we see someone 
The kids love to make up a song as we roll along 
To the post office without fail 
We get some stamps and we check out the mail 
Wnd we never take the same road twice on the way back home 
Half the fun's gettin' lost on the way back home