One time I was working my way down the bread/dairy aisle at a grocery store. It's one of the wider aisles there, if 2 people pulled their carts off to the side, a third person could squeeze down the middle as long as those first two took a little care to not stick out into the aisle too much

Of course they never do

So there I am coming down the middle of the aisle, trying to squeeze between some idiot agonizing over which container of sour cream they should buy, and some moron who can't decide on a loaf of bread who are stopped directly across from each other, uttering plenty of "'scuze me/pardon me/lemme just squeeze through heres" and of course neither of them move an inch

I nearly make it, but do tap one of their carts a bit in the process

I give her a quick "sorry" and continue on my way.

Then she yells down after me with a very indignant "excuse you"

Lady, you were the one blocking the aisle without any situational awareness, and I already apologized, fucking die mad about it.