adj. Fatty; causing fatness.

The pinguiferous slice from the salted swine.
Tait’s Magazine (1855)

If you had told me before that McDonald’s food was pinguiferous, I totally would’ve avoided it. I’m trying to keep my slim figure. I’m holding up a picture of my slim figure to the keyboard right now so you can see it.

As you know from your classical language studies, pinguis is Latin for fat. From that we get this splendid word and a few less nonce-y (but equally rare) words you will read shortly hereafter.

After glancing over McD’s malnutrition information, I find that their food is also pinguid, pinguedinous, and pinguefying. I had no idea that the company had such a super-sized McVocab.