I'm surprised the lockers don't break more often. Flying LHRMAN recently, sitting in 1D, I put my business rucksack sideways in the overhead. Mr and Mrs 1A and 1C then boarded and filled the overheads above them. With a further trolley bag left, Mr 1C takes it and carelessly tries to put it in with my rucksack, knocking my bag flat and it ending up behind his. He then pushes in the trolley bag and has several attempts trying to ram it all in, As this didn't work, he then tried to shut the locker, having several attempts at banging down the door with almighty force, which of course was no more successful than his previous attempts. Once Mr 1C had sat down, I simply retrieved by rucksack, turned it sideways and pushed it in. Not a word spoken by Mr 1C. I'm afraid some of our fellow travellers do not set a very good example.