There was a lego expo near where I used to live last year, and there was an accident at the stadium in the same city, so they crammed the expo all in a different building, a single nursing-home-sized building. What resulted was a super dense line that was the queue equivalent of a snake eating its tail. I got like three hundred pictures out of it, all on Reddit.

At one point, as is my luck it seems, someone held up the line and caused it to descend into complete reorganization because they brought an emotional support dog and got pissed when half the pictures I took happened to have the dog somewhere in it because they were the next person in the line once I got past the first quarter. The scene they made fizzled out the fun.