My dh is a capable cook who cooks at least 3x a week. Last night I was making a carbonara, he asked if he could help so I asked him to grate some cheese. He got the grater and cheese out then stood looking confused. I asked if he was ok, he said is the cheese for the table. I said no the sauce. He then said he was going to grate it into a casserole dish I was using. I said no I was using the dish for something else. He started to get annoyed and said he didn't know what to grate the cheese onto. At this point I was confused and irritated as I was having to talk him through this. I suggested a chopping board , plate or bowl. He slammed about saying I was wasting pots. Which is ironic as when he cooks he uses double the pots I do. AIBU to find this weird? Who doesn't know what to grate cheese onto?