MattKan here,
MattKan there,
MattKan in your underwear!
MattKan MattKan is the best,
MattKan MattKan wears a vest!
MattKan the cat wears a silly hat,
MattKan the boy has a little toy!
MattKan MattKan is so mean,
MattKan MattKan is my fiend!
PS. (He's not really my enemy

)
EDIT: This rhymes