I've just been into Lidl to do my food shopping. Very quiet. Got to checkouts with my trolley full of food - joined queue with only one person in front so nearly done, the next checkout didn't have anyone queuing but a man with a big basket of shopping came behind me. I was only a third of the way through loading my shopping onto the conveyor belt when he started loading his own on! As you will know if you shop in Lidl, they aren't long conveyor belts, so I ended up with a tiny space to fit the rest of my shopping on - things were falling off because I was having to balance them on top of my other items! I apologised to the checkout assistant and he said 'I'm trying to make you some more space' - not that it was his fault of course. I put all my food into my trolley, without packing it in the bags so I was quick checking out. As I was stood at the side packing my food into bags the other man paid and when he was finished I said (politely and in a non aggressive manner) - 'excuse me, but would you mind not putting your things on the conveyor belt before I've finished unloading mine as it's makes it really difficult'. His answer was 'Well if you stacked it better then I wouldn't need to would I?' I replied that that was rude and rather arrogant, and he just said I was rude for telling him what to do. Surely by him loading his items on really close to mine that's being rather prescriptive over how I can load my own items on? The woman next to me said 'well said' and that she would have felt the same as me but AIBU in thinking that you just fucking wait for someone else to load their things on before you start with your own? Why cause unnecessary pressure?!
Disclaimer - I know this is a very first world problem, sorry!