Well…
It's bacon sale week, and the girls get all pissy if we run out. So I went down to the meat market this morning and paid like $23 for 10# of bacon to refill the big freezer. Ordinary stuff, not like double applewood smoked pepper rind thick cut or anything. (When NOT on sale, typically $40-$50 for basically the same stuff. No, I didn't win the lotto.)
I would probably buy capital equipment - more & better food storage shelving, another big freezer, maybe a fancy stove. Maybe one of those nice stand mixers with all the attachments.
The really really good stuff is perishable anyway, so you wouldn't stock up on it. You'd obviously stock up on anything that could be freeze stored without losing too much quality, as well as dry goods that last a few months-years in storage.
No point in buying 100 pounds of live lobster unless you've got a party about to happen, but a frozen side of beef has potential (remember that thing about the second/third freezer?).
If you do win the lotto, you're probably in a better position to not give a fuck about work's opinion of you, so you are more free to go to the market daily to get whatever is fresh.
But no, not about to just buy 17 truckloads of hot pockets and a new microwave.