Many of us have had similar thoughts when presented with a ridiculously oversized portion at a restaurant, but for this poor guy it's mathematically true.
I quite enjoy this type of wordplay, where unrelated phrases are chained together using a shared word. Many years ago, I collaborated on an ABC book whose title (Alphabet Soup Kitchen) employs the same linguistic trick. Certainly there must be a name for this device, but I've yet to find it. It's not a pun, spoonerism, or malapropism. What is it called? Scholars of English are encouraged to comment, particularly those who have names like Johnny Carson Daly or who once played in a band called Frijid Pink Floyd.
For comparison, here's my original concept sketch, which now looks a little like a self-portrait: