So the strum is just a simple DDUUDU strum! I figured this out when I couldn't find and 
good tabs for the song, even though it's fairly easy! and I normally use the CAPO on the 
6th fret! Hope you enjoy this tab!- Tyanah O' Rourke


Am
You know what to do with that
C            G
big fat butt

D                      Am
Wiggle, wiggle, wiggle
C                      G
Wiggle, wiggle, wiggle
D                     Am
Wiggle, wiggle, wiggle
C                         G   D
Just a little bit of    swing

Am
Patty cake, Patty cake
C
With no hands
G
Got me in this club making
D
wedding plans
Am
If I take pictures while you
C
do your dance
G
I can make you famous on
D
Instagram

Am
Hot damn it
C                G
Your booty like two planets
D               Am
Go head, and go ham sammich
 C        G            D
Whoa, I can't stand it
Am
'Cause you know what to do
           C           G
with that big fat butt

D                     Am
Wiggle, wiggle, wiggle
C                      G
Wiggle, wiggle, wiggle
D                      Am
Wiggle, wiggle, wiggle
C                         G     D
Just a little bit of    swing

Am                   C
Cadillac, Cadillac, pop that trunk
G 
Let's take a shot
D
Alley oops that dunk
Am                    C
Tired of working that 9 to 5
G 
Oh baby let me come and
D
change your life

Am
Hot damn it
C                G
Your booty like two planets
D                Am
Go head, and go ham sammich
 C        G             D
Whoa, I can't stand it
Am
'Cause you know what to do
          C            G
with that big fat butt

D                      Am
Wiggle, wiggle, wiggle
C                      G
Wiggle, wiggle, wiggle
D                      Am
Wiggle, wiggle, wiggle
C                            G  D
Just a little bit of    swing


And it goes on like that for snoop dogs rapping bit too!:) hope it works as we'll for 
you as it did for me!