No one can understand an INTP! What do you expect? An INTP will only eat things that have personal meaning for them and God help you if you try to get them to eat something else. They'll dig in their heels and become highly defensive using an acerbic wit to rip you to shreds.

PS: My son is an INTP and has not eaten a vegetable since he was sentient. I stuffed some into him as a baby, but after that, no way!