This is how Bob plays it on acoustic guitar. Quite easy. Lots of fun!

(verse)
       G            Cadd9
It's a Sammy Hagar weekend
  G             Cadd9 
A Sammy Hagar state of mind
       G           Cadd9
It's a Sammy Hagar weekend
  G          Cadd9
A Sammy Hagar way of life


(Chorus/bridge)

            D                  D               D 
We're gonna drink some beer, smoke some pot, snort some coke
          C         C
And then drive... drive over 55.

(repeat verse and chorus as necessary)