PB & J is great, no idea why people wouldn't like that.
Milk also rules, sometimes I'll just have a glass of milk with pasta at home or something. Chips, burgers, whatever. Milk all day.
Pineapple on pizza is another thing I can't understand why people don't like it. So good. Pineapple and cheese on Turkish bread grilled is also awesome, or any bread. Just pineapple and cheese.
Red pepper and peanut butter is a bit weird, I'd try it though.
I love Christmas because there's always leftover chicken, and for some reason having a plate of leftover chicken, Doritos and chocolate produces and amazing mix of flavour.