”遠慮のかたまり” , an interesting Japanese word.

I'm not sure every Japanese knows this word, but this situation happens well. This'd be very hard to translate to other languages.
Don't you feel weird when there's only one piece of food left on the plate when you eat something with your company? I think the last one'd make things awkward at that table. It's clearly better that someone eats it soon before it gets cool cold. But it gets later and later and no one eats it. And then it gets dry and stale and it's not looking so tasty. Everyone knows someone should eat it now so it wouldn't get to waste. But they don't wanna say anything. I think the reason why they don't wanna eat it wouldn't be not that it doesn't look tasty but that they don't want others to think "I'm the one who can do that without feeling anything nothing."(It's weird and they think too much, though.)
Usually someone ends up eating the last one. However, sometimes a waiter comes over to take the plate and in the end, they all go home without eating it.
That's such a waste.
We call the poor last one that "遠慮のかたまり".
I wonder whether you can sense their feelings or not? I bet almost all Japanese people know this well so they even could give the name of this phenomenon.

Yeah, it's a bit weird somehow, but looking at the good manners of Japanese, I'm not really surprised^^