cardinal vowels that touch your heart

I'm correcting and marking (grading) written exams in English phonetics. One of the questions was about the reference system Jones had developed. I asked for the name of that system. Most students gave the correct answer. One of my students offered a new name: "Cardio vowel system".

This reminds me of a message I received from one of my blog followers, who recalled an even more hilarious term: "/kɑːnəl vaʊəlz/"