It’s the T shirt. Can’t be worn by a potato-headed person. Therefore, we have to conclude that Mom is married to a regular human being, which would explain potato children with arms and legs, but it raises ethical questions about human/vegetable love.
I taught freshman English at a Florida public university some years ago, and one of my students (who was on a wrestling scholarship) misspelled the pronoun “I” in an assignment. He spelled it “eye.” The department head told me to try to give him a “D” rather than an “F” for the class.
Don’t give ex-president Narcissist any ideas.