bubbles plays this song on the episode "Never Cry Shitwolf"

G
Kitties are so nice
G
Kitties are so nice
C
spin them round 
C
up and down 
Em
and tickle their bellies right
D                G
kitties are so nice

G
Kitties are so nice
G
Kitties are so nice
C
spin them round
C
up and down 
Em
and tickle their bellies right
D                G
kitties are so nice