I have to be careful or I can eat way too much. I was raised on three hearty meals a day, each with some kind of sweet/dessert, and with snacks in between, and even now, I'd have no problem doing that.
Normally, though, during the week, I just have cereal for breakfast, something smallish at lunch, and then a nice supper.
Weekends, I almost always have a big breakfast, then just a piece of fruit or some cheese at some point, and a smallish early supper.
And for me, it's breakfast, lunch, and supper, though I was raised to call it breakfast, dinner, and supper. I'm stuck between generations, because my dad won't even acknowledge that the word "lunch" even exists, and my nieces all laugh at me for saying "supper," as in, "What is this, 1830? Nobody calls it 'supper' anymore!"