Hee hee, this thread has got me chuckling! Don't care if it's been done before.
I come partly from farming stock where meals were:
breakfast
lunch - cooked meal, followed by pudding (often hot) no later than 12.30, except on Sundays and Xmas when eaten at 1pm.
afternoon tea - quiche/cold cuts plus salad, selection of cakes and tea or milk at 5.30pm (sometimes high tea on a Sunday, esp if trifle involved)
supper - something light before bed, around 9pm.
Now, as an office-bound lazyarse who doesn't get home til late I have:
breakfast
lunch (sandwiches, soup or reheated leftovers but still lunch)
either dinner or supper, depending on when I eat and how complicated the meal is. Complicated or 7-9 = dinner, later or simple = supper.
High tea sometimes features on special occasions.
Oh, and never ever 'afters' or 'sweet'. Pudding here.
No wonder English is the hardest language. What a minefield.