We found this little gem when we saw the sign for it in Alva, OK. It is on US-64 in Ingersoll, OK.
Smok-Shak serves beef and pork BBQ and chicken. Very crowded with locals at lunchtime and we can see why. When our beef BBQ sandwich arrived, it was enormous! The beef is chopped fine and is moist and tangy with what tastes like a tomato base sauce; the fresh homemade bun is outstanding (wish other BBQ restaurants paid as much attention to the bread as they do to the meat). You could have your sandwich dressed with "vegetables": lettuce, tomato, onion and pickle. Hushpuppies are different from those served in NC; these are more like soft, mini-corn sticks.
Since we had two dogs in the car, there was no shade at the restaurant, and it was 94 degrees, we opted for take-out, so we did not have a chance to experience table service. The atmosphere is what I call "typical sticky table" or the kind of place that says they know what they're doing. We drove into the town of Cherokee, OK and found a park where we had an impromptu picnic. It's so much fun discovering delicious food on the road!