What is normal blood sugar right after a heavy meal?

I had a huge country fried steak with cream gravy, black pepper mashed potatoes, a salad with blue cheese dressing, and lots of chips and spicy salsa. I also drank about 5 glasses of ice tea with no sugar in it. I was feelin pretty good and then started feelin like my stomach was sorta tight and I needed to rest on the couch. Just out of curiosity, I had my wife check my blood sugar, because she has to check hers all the time. I've never been diagnosed or even seen a doctor. The blood sugar reading was 259. I felt a whole lot better after resting for about 10 minutes on the couch.