One type of individually wrapped american cheese that I buy frequently has defective wrapping, so when I peel back the first fold... it rips off in my hand. Then I have to stand there and mess with it, digging my fingernail into the cheese slice trying to get the rest off. And even worse is if I don't get individually wrapped, then the cheese itself breaks when I try to peel it from the block.
Sour cream, yogurt, etc., that you peel back the film and it leaves scraps of it on the rim of the container, I don't know why but I HATE that.
I always have to use a sharp knife and repeatedly STAB the "perforated" area on macaroni boxes. It's so NOT already perforated, it's just not.
Granted, this one is probably just ME, but I hate how those snack-pack puddings are attached to each other AND stuck inside the cardboard holes. I just want a pudding and I want it now, I don't want a one handed wrestling match inside my fridge. But I am maybe lazy on that one.
Those "oyster shell" packages, where whatever it is, with any luck a pair of new scissors, is trapped inside a hard plastic bubble and the only way to get it out is to carefully cut around it for ten minutes with a razor knife, and then you cut yourself on the sharp plastic reaching in? Hate that.
The plastic rings on creamer cartons that pull off so hard that creamer spills everywhere.
spaghetti boxes in general. It WILL spill out of your cabinet when you reach for something. You better come to terms with it, or buy one of those tall pasta tins, which I always mean to buy and then forget.