Its not that if they ask for sweets for dinner they'll get it or anything like that.
My DC ask for random meals and I often give them to keep them quiet. They aren't all completely crazy foods. They ask for and enjoy the following-
Cheese and jam sandwiches (yes together).
Sausages, gravy, stuffing & Yorkshire pudding.
Toast and cucmber.
Pasta with cheese and marmite (this isn't that weird)
Honey pepper chicken (this is delicious - I guess they've eaten it somewhere else)
Cheesey mash as a meal (I actually give them fish pie but they don't realise)
Rice with mint sauce (otherwise just plain rice)
Puddings-
Strawberries and dry shreddies.
Banana "icecream" with frozen grapes.
Greek yogurt with a spoon of milkshake/ hot chocolate powder stirred in (this is a new one)
Coconut biscuit dipped in strawberry mousse.