I just don't understand that when a person goes into a kitchen, they automatically go and nibble whatever's there.
They don't care what it is because it could equally be a pile of chopped vegetables, some raw cookie dough, nuts or grated cheese. They don't care how much it is, because they just pick up/tear off around a finger-full (or 10% of the remainder, whichever is less) and eat it. The only rules are not to finish what is there, and not to eat anything poisonous like raw meat.
If they stay in the kitchen for more than five or ten minutes, they will repeat the process. Why?
It could be straight after a meal so it's not because they are hungry
It could be straight before a meal, so it's not because they are worried that it's a long time before they will get the chance to eat again.
It could be a carrot, so it's not because they wonder what it tastes like.
Why do they do it? It drives me nuts, not because we will run out of food (although if we will, I'll be angry), but because I will have to think through whether losing this amount of food is likely to make us run out. It also drives me nuts because I don't understand them and feel left out of this communion-like event. I'm not at one with the food and to imitate would be wrong.
Yes I'm sorry, I am crazy, and I'm not a chef so I'm probably wrong. But maybe someone out there will read this and think "yes, me too!"