Strum Pattern:
DDUUD
From "My grandpa" to "sing some too" I strum once per chord.
On the split measures I just do DD for each chord. The split measures are G5 D5 on 
the last line of the verses and C5 C5 in the chorus.

Verse 1:
G5                     C5
My grandpa he's ninty-five
G5                              D5
he keeps on dancing he's still alive
G5                     C5
My grandma she's ninty-two
G5                                D5
she loves to dance and sing some too
G5                          C5
I don't know but I've been told
G5                                        D5
if you keep on dancing you'll never grow old
G5                       C5              G5          D5        G5
Come on darlin' put a pretty dress on we're gonna go out tonight

Chorus:
C5     C5    A5                 G5
Dance Dance Dance x3 (All night long)

Verse 2:
G5                      C5
I'm a hard workin man I'm a sun of a gun
G5                              D5
I been workin all week in the noonday sun
G5                          C5
the wood's in the kitchen the cow's in the barn
G5                          D5
I'm all cleaned up and my chores are all done
G5             C5          G5                D5
Take my hand come along let's go out and have some fun
G5                       C5              G5          D5        G5
Come on darlin' put a pretty dress on we're gonna go out tonight

Chorus

Verse 3:
G5                      C5
Well come on darlin' don't you look that way
G5                      D5
don't know when you smile I've got to say
G5                              C5
You're my honey-pumpkin-lover you're my heart's delight
G5                    D5
don't you want to go out tonight
G5                           C5
You're such a pretty lady you're such a sweet girl
G5                           D5
when you dance it brightens up my world
G5                       C5              G5          D5        G5
Come on darlin' put a pretty dress on we're gonna go out tonight

Chorus