I've done similar things to 'pigging out', by eating things most of us wouldn't...
BUT... I prepare for it by:
1. Eating a fairly HIGH carb meal (like 50g of carb) the meal BEFORE the 'pig-out' meal. (This is so my insulin response during the pig-out meal will be appropriate to the carb-level, since research has shown insulin response at any given meal is based on the previous meal's intake) Then;
2. Exercising for 2.5 to 3 hours at a moderate-to-high intensity starting 50 minutes AFTER the first bite of the meal mentioned in step 1... (to prevent a high from the carb and to help deplete glycogen stores... depleting your glycogen stores means much of the glucose in your next meal will go to replenishing those stores, instead of floating around as elevated blood glucose) Then;
3. Eating my pig-out meal, from start to finish within 30-40 minutes at the most, then ensuring I'm back home within 60 minutes of starting the meal... Then;
4. Testing at the one hour (after beginning the meal) mark, and every 30 minutes after for 5 full hours once home, being ready to jump on my bike again should I need to 'adjust' my blood sugar from a high to a normal reading.
Now, that seems like a LOT of preparation, testing and work, and it is. And I've since learned that I DO NOT get away as 'free' as I think I do...
Issues arising from the 'pig out'.
1. Constipation (going from no/low-carb to crazy amounts of white bread pizza crust is NOT kind to my system.)
2. Increased cravings for several days. I think it's due mostly to increased insulin in the system, and partially a psychological effect.
3. Slightly wonky blood glucose readings for two days after. Usually I'm hit by liver dumps MUCH MORE after eating poorly, even when I've prepared for it...
4. I feel like CRAP for a couple days - both physically and emotionally. I tend to 'grind' on myself for doing stupid things.
Overall, in my opinion it's just NOT worth it. Not even remotely.