I can't stand it when the food on my plate touch each other. I hate having rice sweet peas, and chicken, and there are rice grains in my sweet peas. I cant stand it when i make an oumlet for breakfast, and cheese grits, and the grits ooze over to my oumlet, it irritates me. I'll still eat it but it hurts to see it, and the weird thing is if food are meant to be mixed together its fine, macaroni salad, i dont care if the its mixed together.And i hate cold salad dressing, but thats a different story.
Ps: if you get bored you can always rearrange the cushion the settee (my friend does that to cure her OCD itch)
However when it's all shoved in a burger it's fine.
Also, who'd eat ice cream with a burger? Not many people. But a shake is ok, and that's just like melted ice cream.
It's just how we are used to things being presented I guess.