I know a song about cats...
My little boy made this up and sings it to my pudgiest cat.

"You're a fatty-catty in disguise
You have eaten all the pies
And those pies went to your thighs"
(repeat in singsong voice until boredom threshold is reached, or cat runs away)

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"you are terrifying
and strange and beautiful
something not everyone knows how to love." - Warsan Shire