To me the joy of lawyer cat is that as a presumably highly educated man, he feels the need to inform another highly educated man that he is not a cat. This is a very lawyer thing to do.
It's also very "lawyery" to have no sense of humour. The reaction of the other two colleagues on the call was akin to him appearing with a little bit of tomato sauce at the side of his mouth, not of him appearing as a man trapped as a full blown cat and having an existential crisis in front of them.