Allsup's is a NM chain. I've been going to Allsups since I was kneehigh to a chapulΓn.
They are some of the nastiest establishments on the planet. When you open the door, you're assaulted by the rank smell wave of rancid grease and body odor. Each step needs to be taken carefully because the perpetual grease film on the tile floor, that is occasionally stirred around with the same mop water that gets regularly changed once a year. God help you if you use the bathroom. And the food? It's a good way to harden your digestive tract so you're immune to botulism, ecoli, listeria, and hepatitis.
When you walk out, you notice that the stench has stuck to your clothes, your hair, your nose hair, your eye membranes, your mouth tissue, and any other organ or orifice you exposed to the miasma inside. It will stick to your car, your pet, anything that you come within 5 feet of for the next 24 hours. You should just burn your clothes immediately. Your car may never be the same.